./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:23:38,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:23:38,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:23:38,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:23:38,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:23:38,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:23:38,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:23:38,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:23:38,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:23:38,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:23:38,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:23:38,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:23:38,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:23:38,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:23:38,420 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:23:38,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:23:38,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:23:38,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:23:38,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:23:38,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:23:38,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:23:38,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:23:38,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:23:38,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:23:38,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:23:38,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:23:38,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:23:38,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:23:38,424 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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/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 -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2024-11-13 14:23:38,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:23:38,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:23:38,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:23:38,763 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:23:38,763 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:23:38,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i Unable to find full path for "g++" [2024-11-13 14:23:40,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:23:41,086 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:23:41,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-11-13 14:23:41,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/data/cbd5593a7/e1bfad00c79e4628a7d41d04705963c1/FLAGc978387d8 [2024-11-13 14:23:41,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/data/cbd5593a7/e1bfad00c79e4628a7d41d04705963c1 [2024-11-13 14:23:41,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:23:41,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:23:41,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:23:41,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:23:41,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:23:41,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cffc8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41, skipping insertion in model container [2024-11-13 14:23:41,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:23:41,357 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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-11-13 14:23:41,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:23:41,396 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:23:41,411 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_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-11-13 14:23:41,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:23:41,440 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:23:41,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41 WrapperNode [2024-11-13 14:23:41,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:23:41,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:23:41,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:23:41,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:23:41,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,482 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-13 14:23:41,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:23:41,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:23:41,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:23:41,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:23:41,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,513 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 14:23:41,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:23:41,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:23:41,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:23:41,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:23:41,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (1/1) ... [2024-11-13 14:23:41,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:23:41,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:41,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:23:41,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:23:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:23:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:23:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:23:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:23:41,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:23:41,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:23:41,842 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-13 14:23:41,842 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:23:41,858 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:23:41,859 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:23:41,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:23:41 BoogieIcfgContainer [2024-11-13 14:23:41,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:23:41,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:23:41,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:23:41,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:23:41,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:23:41" (1/3) ... [2024-11-13 14:23:41,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:23:41, skipping insertion in model container [2024-11-13 14:23:41,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:41" (2/3) ... [2024-11-13 14:23:41,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:23:41, skipping insertion in model container [2024-11-13 14:23:41,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:23:41" (3/3) ... [2024-11-13 14:23:41,873 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-11-13 14:23:41,892 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:23:41,895 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG fragtest_simple.i that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 14:23:41,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:23:41,987 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;@de1b8cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:23:41,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:23:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 14:23:42,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:42,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:42,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:42,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1395682180, now seen corresponding path program 1 times [2024-11-13 14:23:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719192000] [2024-11-13 14:23:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:42,169 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 14:23:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719192000] [2024-11-13 14:23:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719192000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:42,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:42,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:23:42,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712491499] [2024-11-13 14:23:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:42,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:23:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:42,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:23:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:23:42,195 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 14:23:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:42,205 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2024-11-13 14:23:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:23:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-13 14:23:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:42,213 INFO L225 Difference]: With dead ends: 34 [2024-11-13 14:23:42,213 INFO L226 Difference]: Without dead ends: 15 [2024-11-13 14:23:42,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:23:42,218 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:42,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-13 14:23:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-13 14:23:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 14:23:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-13 14:23:42,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2024-11-13 14:23:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:42,248 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-13 14:23:42,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 14:23:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-13 14:23:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:23:42,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:42,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:42,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:23:42,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:42,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1904714359, now seen corresponding path program 1 times [2024-11-13 14:23:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699761810] [2024-11-13 14:23:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:42,488 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 14:23:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699761810] [2024-11-13 14:23:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699761810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:42,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:42,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:23:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488715431] [2024-11-13 14:23:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:23:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:23:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:23:42,492 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 14:23:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:42,544 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-13 14:23:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:23:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-13 14:23:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:42,545 INFO L225 Difference]: With dead ends: 20 [2024-11-13 14:23:42,545 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 14:23:42,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:42,546 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:42,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 14:23:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-13 14:23:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 14:23:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-13 14:23:42,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2024-11-13 14:23:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:42,555 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-13 14:23:42,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 14:23:42,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-13 14:23:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:23:42,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:42,556 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:42,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:23:42,556 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:42,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1349212138, now seen corresponding path program 1 times [2024-11-13 14:23:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:42,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337504171] [2024-11-13 14:23:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:42,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:42,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337504171] [2024-11-13 14:23:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337504171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:42,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:42,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:23:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349202325] [2024-11-13 14:23:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:42,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:23:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:23:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:42,766 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 14:23:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:42,852 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-13 14:23:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:23:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-13 14:23:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:42,854 INFO L225 Difference]: With dead ends: 33 [2024-11-13 14:23:42,854 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 14:23:42,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:23:42,855 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:42,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:42,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 14:23:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2024-11-13 14:23:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 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 14:23:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-13 14:23:42,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2024-11-13 14:23:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:42,864 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-13 14:23:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 14:23:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-13 14:23:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:23:42,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:42,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:42,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:23:42,867 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:42,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1989271985, now seen corresponding path program 1 times [2024-11-13 14:23:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:42,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564089067] [2024-11-13 14:23:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564089067] [2024-11-13 14:23:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564089067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59070790] [2024-11-13 14:23:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:43,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:43,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:43,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:23:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:43,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:23:43,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:43,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:43,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59070790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:43,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-13 14:23:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447094070] [2024-11-13 14:23:43,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:43,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:23:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:23:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:23:43,411 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 14:23:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:43,708 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-13 14:23:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:23:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 18 [2024-11-13 14:23:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:43,710 INFO L225 Difference]: With dead ends: 43 [2024-11-13 14:23:43,710 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 14:23:43,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:23:43,712 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:43,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 14:23:43,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2024-11-13 14:23:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 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 14:23:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-13 14:23:43,722 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2024-11-13 14:23:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:43,723 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-13 14:23:43,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 14:23:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-13 14:23:43,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 14:23:43,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:43,724 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:43,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:23:43,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:43,928 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:43,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1230254489, now seen corresponding path program 2 times [2024-11-13 14:23:43,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:43,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043894251] [2024-11-13 14:23:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:43,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:44,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043894251] [2024-11-13 14:23:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043894251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:44,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616644019] [2024-11-13 14:23:44,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:23:44,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:44,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:44,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:23:44,249 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:23:44,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:44,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:23:44,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:44,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:44,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616644019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:44,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:44,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-11-13 14:23:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932782430] [2024-11-13 14:23:44,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:44,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:23:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:23:44,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:23:44,576 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:23:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:44,968 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-13 14:23:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:23:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 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 24 [2024-11-13 14:23:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:44,970 INFO L225 Difference]: With dead ends: 56 [2024-11-13 14:23:44,971 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 14:23:44,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:23:44,973 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:44,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 63 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 14:23:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2024-11-13 14:23:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 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 14:23:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 14:23:44,985 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 24 [2024-11-13 14:23:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:44,986 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 14:23:44,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:23:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 14:23:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:23:44,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:44,988 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:45,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:23:45,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:45,188 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:45,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 91447999, now seen corresponding path program 3 times [2024-11-13 14:23:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259078234] [2024-11-13 14:23:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259078234] [2024-11-13 14:23:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259078234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417510800] [2024-11-13 14:23:45,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:23:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:45,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:45,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:23:45,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:23:45,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:45,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:23:45,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:45,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417510800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:45,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-13 14:23:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481993618] [2024-11-13 14:23:45,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:45,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:23:45,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:23:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:23:45,822 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 14:23:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:45,991 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-11-13 14:23:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:23:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 14:23:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:45,993 INFO L225 Difference]: With dead ends: 64 [2024-11-13 14:23:45,993 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 14:23:45,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:23:45,994 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:45,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 79 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 14:23:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2024-11-13 14:23:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 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 14:23:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-13 14:23:46,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2024-11-13 14:23:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:46,001 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-13 14:23:46,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 14:23:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-13 14:23:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:23:46,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:46,002 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:46,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:23:46,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:46,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:46,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2058654820, now seen corresponding path program 4 times [2024-11-13 14:23:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:46,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912283076] [2024-11-13 14:23:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:46,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912283076] [2024-11-13 14:23:46,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912283076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:46,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666936130] [2024-11-13 14:23:46,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:23:46,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:46,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:46,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:46,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:23:46,470 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:23:46,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:46,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:23:46,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:46,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666936130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:46,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-11-13 14:23:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291714455] [2024-11-13 14:23:46,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:46,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:23:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:23:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:23:46,698 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:23:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:46,836 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-11-13 14:23:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:23:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 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 32 [2024-11-13 14:23:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:46,838 INFO L225 Difference]: With dead ends: 50 [2024-11-13 14:23:46,839 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 14:23:46,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:23:46,840 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:46,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 14:23:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2024-11-13 14:23:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:23:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-13 14:23:46,853 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 32 [2024-11-13 14:23:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:46,854 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-13 14:23:46,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:23:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-13 14:23:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:23:46,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:46,857 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:46,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:23:47,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:47,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:47,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -808988470, now seen corresponding path program 5 times [2024-11-13 14:23:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:47,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125962788] [2024-11-13 14:23:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125962788] [2024-11-13 14:23:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125962788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514843258] [2024-11-13 14:23:47,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:23:47,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:47,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:47,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:23:47,412 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 14:23:47,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:47,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:23:47,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:47,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514843258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:47,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:47,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-13 14:23:47,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479138900] [2024-11-13 14:23:47,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:47,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:23:47,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:23:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:23:47,891 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 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 14:23:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:48,229 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2024-11-13 14:23:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:23:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 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 40 [2024-11-13 14:23:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:48,230 INFO L225 Difference]: With dead ends: 109 [2024-11-13 14:23:48,230 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 14:23:48,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:23:48,232 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 47 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:48,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 141 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:23:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 14:23:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2024-11-13 14:23:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-11-13 14:23:48,239 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 40 [2024-11-13 14:23:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:48,239 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-11-13 14:23:48,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 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 14:23:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-11-13 14:23:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:23:48,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:48,241 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:48,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:23:48,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:48,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:48,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1881548204, now seen corresponding path program 6 times [2024-11-13 14:23:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535705570] [2024-11-13 14:23:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:48,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535705570] [2024-11-13 14:23:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535705570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132864515] [2024-11-13 14:23:48,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:23:48,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:48,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:48,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:23:48,894 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 14:23:48,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:48,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:23:48,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:49,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:49,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132864515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:49,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:49,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-13 14:23:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932479202] [2024-11-13 14:23:49,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:49,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:23:49,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:23:49,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:23:49,185 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:23:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:49,321 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2024-11-13 14:23:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:23:49,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 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 44 [2024-11-13 14:23:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:49,323 INFO L225 Difference]: With dead ends: 62 [2024-11-13 14:23:49,325 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 14:23:49,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 79 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:23:49,327 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:49,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 14:23:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-11-13 14:23:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 0 states have call successors, (0), 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 14:23:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-11-13 14:23:49,341 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 44 [2024-11-13 14:23:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:49,341 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-11-13 14:23:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:23:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-11-13 14:23:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:23:49,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:49,342 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:49,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:23:49,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:49,550 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:49,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1644177082, now seen corresponding path program 7 times [2024-11-13 14:23:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202080103] [2024-11-13 14:23:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202080103] [2024-11-13 14:23:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202080103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69932853] [2024-11-13 14:23:49,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:23:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:49,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:49,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:23:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:50,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:23:50,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:50,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69932853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:50,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-11-13 14:23:50,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734143866] [2024-11-13 14:23:50,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:50,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:23:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:23:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:23:50,522 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:50,764 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2024-11-13 14:23:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:23:50,764 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 14:23:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:50,765 INFO L225 Difference]: With dead ends: 109 [2024-11-13 14:23:50,765 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 14:23:50,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 83 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:23:50,767 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:50,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 123 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 14:23:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2024-11-13 14:23:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:23:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2024-11-13 14:23:50,774 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 52 [2024-11-13 14:23:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:50,774 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2024-11-13 14:23:50,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2024-11-13 14:23:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:23:50,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:50,775 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:50,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:23:50,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:23:50,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:50,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1355701919, now seen corresponding path program 8 times [2024-11-13 14:23:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519469561] [2024-11-13 14:23:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519469561] [2024-11-13 14:23:51,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519469561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425771109] [2024-11-13 14:23:51,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:23:51,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:51,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:51,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:51,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:23:51,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:23:51,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:51,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:23:51,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 56 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:51,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 56 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:52,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425771109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:52,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 27 [2024-11-13 14:23:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969017336] [2024-11-13 14:23:52,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:52,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:23:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:52,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:23:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:23:52,100 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 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 14:23:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:52,940 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2024-11-13 14:23:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 14:23:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 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 54 [2024-11-13 14:23:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:52,941 INFO L225 Difference]: With dead ends: 121 [2024-11-13 14:23:52,941 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 14:23:52,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=750, Invalid=3410, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 14:23:52,944 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 91 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:52,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 127 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:23:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 14:23:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2024-11-13 14:23:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 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 14:23:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-13 14:23:52,951 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 54 [2024-11-13 14:23:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:52,952 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-13 14:23:52,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 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 14:23:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-13 14:23:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:23:52,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:52,953 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:52,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:23:53,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:23:53,168 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:53,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1562622007, now seen corresponding path program 9 times [2024-11-13 14:23:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076824251] [2024-11-13 14:23:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076824251] [2024-11-13 14:23:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076824251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057047537] [2024-11-13 14:23:53,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:23:53,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:53,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:53,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:53,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:23:53,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 14:23:53,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:53,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:23:53,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:54,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057047537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:54,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:54,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2024-11-13 14:23:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162293356] [2024-11-13 14:23:54,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:54,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:23:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:23:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:23:54,386 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 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 14:23:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:54,701 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2024-11-13 14:23:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 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 60 [2024-11-13 14:23:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:54,702 INFO L225 Difference]: With dead ends: 129 [2024-11-13 14:23:54,702 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 14:23:54,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:23:54,704 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:54,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 149 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:23:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 14:23:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2024-11-13 14:23:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 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 14:23:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-13 14:23:54,715 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 60 [2024-11-13 14:23:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:54,716 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-13 14:23:54,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 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 14:23:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-13 14:23:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:23:54,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:54,717 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:54,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:23:54,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:23:54,921 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:54,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -217957604, now seen corresponding path program 10 times [2024-11-13 14:23:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177138377] [2024-11-13 14:23:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 72 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:55,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177138377] [2024-11-13 14:23:55,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177138377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:55,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716054943] [2024-11-13 14:23:55,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:23:55,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:55,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:23:55,385 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:23:55,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:55,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 14:23:55,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716054943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:55,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:55,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-11-13 14:23:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512136506] [2024-11-13 14:23:55,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:55,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:23:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:23:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:23:55,778 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 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 14:23:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:55,968 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2024-11-13 14:23:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:23:55,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 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 62 [2024-11-13 14:23:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:55,969 INFO L225 Difference]: With dead ends: 80 [2024-11-13 14:23:55,969 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 14:23:55,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:23:55,970 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:55,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 143 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 14:23:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2024-11-13 14:23:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 0 states have call successors, (0), 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 14:23:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-13 14:23:55,983 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 62 [2024-11-13 14:23:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:55,983 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-13 14:23:55,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 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 14:23:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-13 14:23:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 14:23:55,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:55,985 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:56,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:23:56,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:23:56,185 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:56,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1673576574, now seen corresponding path program 11 times [2024-11-13 14:23:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:56,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525919171] [2024-11-13 14:23:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 173 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:56,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525919171] [2024-11-13 14:23:56,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525919171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:56,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046469127] [2024-11-13 14:23:56,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:23:56,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:56,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:56,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:23:56,823 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-13 14:23:56,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:56,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:23:56,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:57,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046469127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:57,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:57,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2024-11-13 14:23:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261542275] [2024-11-13 14:23:57,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:57,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 14:23:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 14:23:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:23:57,739 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 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 14:23:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:58,333 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2024-11-13 14:23:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 14:23:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 14:23:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:58,334 INFO L225 Difference]: With dead ends: 194 [2024-11-13 14:23:58,334 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 14:23:58,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 108 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=856, Invalid=2566, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 14:23:58,336 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 102 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:58,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 249 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:23:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 14:23:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2024-11-13 14:23:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 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 14:23:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-13 14:23:58,346 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 70 [2024-11-13 14:23:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:58,346 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-13 14:23:58,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 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 14:23:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-13 14:23:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:23:58,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:58,349 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:58,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:23:58,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:23:58,549 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:58,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash -447251572, now seen corresponding path program 12 times [2024-11-13 14:23:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877434883] [2024-11-13 14:23:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 110 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:58,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:58,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877434883] [2024-11-13 14:23:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877434883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:58,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606306182] [2024-11-13 14:23:58,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:23:58,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:58,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:58,949 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:58,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:23:59,077 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-13 14:23:59,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:59,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:23:59,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:59,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606306182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:59,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:59,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-11-13 14:23:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952348640] [2024-11-13 14:23:59,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:59,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:23:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:23:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:23:59,543 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 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 14:23:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:59,773 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2024-11-13 14:23:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 14:23:59,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 14:23:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:59,775 INFO L225 Difference]: With dead ends: 92 [2024-11-13 14:23:59,775 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 14:23:59,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 133 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:23:59,776 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:59,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 14:23:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2024-11-13 14:23:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 0 states have call successors, (0), 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 14:23:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2024-11-13 14:23:59,784 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 74 [2024-11-13 14:23:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:59,784 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2024-11-13 14:23:59,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 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 14:23:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2024-11-13 14:23:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:23:59,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:59,786 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:59,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:23:59,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:23:59,986 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:59,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1665470450, now seen corresponding path program 13 times [2024-11-13 14:23:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823372862] [2024-11-13 14:23:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 255 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823372862] [2024-11-13 14:24:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823372862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903715943] [2024-11-13 14:24:00,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:24:00,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:00,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:00,532 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:00,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:24:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:00,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:24:00,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:01,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903715943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:01,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-11-13 14:24:01,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967825853] [2024-11-13 14:24:01,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:01,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 14:24:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 14:24:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:24:01,567 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 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 14:24:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:01,948 INFO L93 Difference]: Finished difference Result 174 states and 202 transitions. [2024-11-13 14:24:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:24:01,949 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 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 82 [2024-11-13 14:24:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:01,950 INFO L225 Difference]: With dead ends: 174 [2024-11-13 14:24:01,950 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 14:24:01,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 128 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 14:24:01,952 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:01,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 224 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 14:24:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2024-11-13 14:24:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-13 14:24:01,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 82 [2024-11-13 14:24:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:01,960 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-13 14:24:01,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 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 14:24:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-13 14:24:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 14:24:01,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:01,961 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:01,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:24:02,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:24:02,165 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:02,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1395381993, now seen corresponding path program 14 times [2024-11-13 14:24:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23614899] [2024-11-13 14:24:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23614899] [2024-11-13 14:24:02,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23614899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383159105] [2024-11-13 14:24:02,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:02,819 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:02,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:24:02,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:24:02,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:02,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 14:24:02,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:03,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383159105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:04,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 16] total 42 [2024-11-13 14:24:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541133374] [2024-11-13 14:24:04,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:04,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 14:24:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 14:24:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:24:04,123 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:05,360 INFO L93 Difference]: Finished difference Result 186 states and 217 transitions. [2024-11-13 14:24:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 14:24:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-13 14:24:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:05,362 INFO L225 Difference]: With dead ends: 186 [2024-11-13 14:24:05,362 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 14:24:05,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 141 SyntacticMatches, 26 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1840, Invalid=9080, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 14:24:05,366 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 156 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:05,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 213 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:24:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 14:24:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 91. [2024-11-13 14:24:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-13 14:24:05,375 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 84 [2024-11-13 14:24:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:05,375 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-13 14:24:05,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-13 14:24:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 14:24:05,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:05,377 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:05,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:24:05,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:24:05,581 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:05,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 842168303, now seen corresponding path program 15 times [2024-11-13 14:24:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932406084] [2024-11-13 14:24:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 302 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932406084] [2024-11-13 14:24:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932406084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083353706] [2024-11-13 14:24:06,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:06,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:06,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:06,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:06,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:24:06,388 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-13 14:24:06,388 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:06,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:24:06,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:07,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083353706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:07,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2024-11-13 14:24:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655252382] [2024-11-13 14:24:07,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:07,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 14:24:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 14:24:07,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:24:07,526 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 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 14:24:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:07,953 INFO L93 Difference]: Finished difference Result 194 states and 226 transitions. [2024-11-13 14:24:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 14:24:07,953 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-13 14:24:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:07,954 INFO L225 Difference]: With dead ends: 194 [2024-11-13 14:24:07,955 INFO L226 Difference]: Without dead ends: 135 [2024-11-13 14:24:07,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 138 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 14:24:07,956 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 96 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:07,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 277 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-13 14:24:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2024-11-13 14:24:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-13 14:24:07,964 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 90 [2024-11-13 14:24:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:07,965 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-13 14:24:07,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 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 14:24:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-13 14:24:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 14:24:07,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:07,966 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:07,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:24:08,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:24:08,170 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:08,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1719886828, now seen corresponding path program 16 times [2024-11-13 14:24:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702407662] [2024-11-13 14:24:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:08,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:08,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702407662] [2024-11-13 14:24:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702407662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:08,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391488743] [2024-11-13 14:24:08,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:24:08,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:08,681 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:08,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:24:08,814 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:24:08,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:08,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:24:08,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:08,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391488743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:09,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:09,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-11-13 14:24:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210342660] [2024-11-13 14:24:09,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:09,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:24:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:24:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:24:09,340 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:09,646 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-13 14:24:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 14:24:09,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-13 14:24:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:09,650 INFO L225 Difference]: With dead ends: 110 [2024-11-13 14:24:09,651 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 14:24:09,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 167 SyntacticMatches, 27 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=462, Invalid=798, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:24:09,652 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:09,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 14:24:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2024-11-13 14:24:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 0 states have call successors, (0), 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 14:24:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2024-11-13 14:24:09,662 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 92 [2024-11-13 14:24:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:09,663 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2024-11-13 14:24:09,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2024-11-13 14:24:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 14:24:09,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:09,664 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:09,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:24:09,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:09,865 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:09,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1956980858, now seen corresponding path program 17 times [2024-11-13 14:24:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:09,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180287774] [2024-11-13 14:24:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 408 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180287774] [2024-11-13 14:24:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180287774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950199877] [2024-11-13 14:24:10,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:24:10,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:10,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:10,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:10,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:24:10,754 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-13 14:24:10,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:10,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 14:24:10,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:11,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:12,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950199877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:12,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:12,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2024-11-13 14:24:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972656856] [2024-11-13 14:24:12,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:12,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 14:24:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 14:24:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=2106, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 14:24:12,037 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 53 states, 53 states have (on average 3.339622641509434) internal successors, (177), 53 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 14:24:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:12,884 INFO L93 Difference]: Finished difference Result 279 states and 316 transitions. [2024-11-13 14:24:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 14:24:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.339622641509434) internal successors, (177), 53 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 100 [2024-11-13 14:24:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:12,885 INFO L225 Difference]: With dead ends: 279 [2024-11-13 14:24:12,885 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 14:24:12,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 153 SyntacticMatches, 27 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1721, Invalid=5251, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 14:24:12,891 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 170 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:12,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 360 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:24:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 14:24:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2024-11-13 14:24:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 104 states have internal predecessors, (108), 0 states have call successors, (0), 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 14:24:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2024-11-13 14:24:12,901 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 100 [2024-11-13 14:24:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:12,902 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2024-11-13 14:24:12,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.339622641509434) internal successors, (177), 53 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 14:24:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2024-11-13 14:24:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:24:12,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:12,903 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:12,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:24:13,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:13,104 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:13,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 600061700, now seen corresponding path program 18 times [2024-11-13 14:24:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504583279] [2024-11-13 14:24:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 240 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:13,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504583279] [2024-11-13 14:24:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504583279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275846403] [2024-11-13 14:24:13,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:24:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:13,721 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:13,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:24:13,883 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-13 14:24:13,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:13,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:24:13,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:14,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:14,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275846403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:14,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:14,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-11-13 14:24:14,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936502072] [2024-11-13 14:24:14,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:14,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:24:14,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:24:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:24:14,615 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 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 14:24:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:14,987 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2024-11-13 14:24:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 14:24:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 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 104 [2024-11-13 14:24:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:14,989 INFO L225 Difference]: With dead ends: 122 [2024-11-13 14:24:14,989 INFO L226 Difference]: Without dead ends: 120 [2024-11-13 14:24:14,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 188 SyntacticMatches, 32 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=573, Invalid=987, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:24:14,990 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:14,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 173 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-13 14:24:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-13 14:24:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 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 14:24:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2024-11-13 14:24:15,003 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 104 [2024-11-13 14:24:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:15,003 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2024-11-13 14:24:15,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 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 14:24:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2024-11-13 14:24:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 14:24:15,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:15,005 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:15,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:24:15,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 14:24:15,206 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:15,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -220540054, now seen corresponding path program 19 times [2024-11-13 14:24:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253279739] [2024-11-13 14:24:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 530 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253279739] [2024-11-13 14:24:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253279739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570083706] [2024-11-13 14:24:16,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:24:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:16,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:16,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:16,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:24:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:16,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:24:16,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:17,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570083706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:17,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 56 [2024-11-13 14:24:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145838975] [2024-11-13 14:24:17,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 14:24:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 14:24:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=2374, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:24:17,788 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 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 14:24:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:18,338 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2024-11-13 14:24:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:24:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 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 112 [2024-11-13 14:24:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:18,339 INFO L225 Difference]: With dead ends: 239 [2024-11-13 14:24:18,339 INFO L226 Difference]: Without dead ends: 166 [2024-11-13 14:24:18,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 173 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1320, Invalid=3936, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 14:24:18,345 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 147 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:18,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 412 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:24:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-13 14:24:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 115. [2024-11-13 14:24:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 0 states have call successors, (0), 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 14:24:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2024-11-13 14:24:18,355 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 112 [2024-11-13 14:24:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:18,355 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2024-11-13 14:24:18,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 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 14:24:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2024-11-13 14:24:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 14:24:18,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:18,356 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:18,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 14:24:18,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:18,557 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:18,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash 425532879, now seen corresponding path program 20 times [2024-11-13 14:24:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:18,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146890734] [2024-11-13 14:24:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 530 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146890734] [2024-11-13 14:24:19,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146890734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775293911] [2024-11-13 14:24:19,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:19,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:19,665 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:19,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:24:19,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:24:19,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:19,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:24:19,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 306 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:20,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 306 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775293911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:21,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 21, 21] total 57 [2024-11-13 14:24:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448010746] [2024-11-13 14:24:21,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:21,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 14:24:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 14:24:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=2639, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 14:24:21,484 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 57 states, 57 states have (on average 3.9649122807017543) internal successors, (226), 57 states have internal predecessors, (226), 0 states have call successors, (0), 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 14:24:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:23,393 INFO L93 Difference]: Finished difference Result 251 states and 292 transitions. [2024-11-13 14:24:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-13 14:24:23,394 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.9649122807017543) internal successors, (226), 57 states have internal predecessors, (226), 0 states have call successors, (0), 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 114 [2024-11-13 14:24:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:23,395 INFO L225 Difference]: With dead ends: 251 [2024-11-13 14:24:23,395 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 14:24:23,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 191 SyntacticMatches, 36 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8226 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3405, Invalid=17475, Unknown=0, NotChecked=0, Total=20880 [2024-11-13 14:24:23,397 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 271 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:23,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 271 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:24:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 14:24:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 121. [2024-11-13 14:24:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 120 states have internal predecessors, (124), 0 states have call successors, (0), 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 14:24:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2024-11-13 14:24:23,408 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 114 [2024-11-13 14:24:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:23,408 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2024-11-13 14:24:23,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.9649122807017543) internal successors, (226), 57 states have internal predecessors, (226), 0 states have call successors, (0), 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 14:24:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2024-11-13 14:24:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 14:24:23,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:23,410 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:23,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:24:23,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:23,611 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:23,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -119827993, now seen corresponding path program 21 times [2024-11-13 14:24:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:23,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156717257] [2024-11-13 14:24:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 597 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156717257] [2024-11-13 14:24:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156717257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786524739] [2024-11-13 14:24:24,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:24,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:24,648 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:24,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:24:24,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-13 14:24:24,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:24,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:24:24,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 648 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:25,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 648 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:26,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786524739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:26,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:26,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 61 [2024-11-13 14:24:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097756643] [2024-11-13 14:24:26,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:26,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 14:24:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:26,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 14:24:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=843, Invalid=2817, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 14:24:26,476 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 0 states have call successors, (0), 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 14:24:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:27,076 INFO L93 Difference]: Finished difference Result 259 states and 301 transitions. [2024-11-13 14:24:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:24:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 0 states have call successors, (0), 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 120 [2024-11-13 14:24:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:27,077 INFO L225 Difference]: With dead ends: 259 [2024-11-13 14:24:27,077 INFO L226 Difference]: Without dead ends: 180 [2024-11-13 14:24:27,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 183 SyntacticMatches, 36 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1605, Invalid=4715, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 14:24:27,078 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 152 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:27,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 399 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-13 14:24:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 123. [2024-11-13 14:24:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 0 states have call successors, (0), 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 14:24:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2024-11-13 14:24:27,088 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 120 [2024-11-13 14:24:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:27,088 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2024-11-13 14:24:27,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 0 states have call successors, (0), 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 14:24:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2024-11-13 14:24:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 14:24:27,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:27,090 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:27,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:24:27,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:27,294 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:27,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -999053492, now seen corresponding path program 22 times [2024-11-13 14:24:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700858270] [2024-11-13 14:24:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:27,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 342 proven. 686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700858270] [2024-11-13 14:24:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700858270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403863831] [2024-11-13 14:24:27,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:24:27,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:27,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:27,986 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:27,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:24:28,132 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:24:28,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:28,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:24:28,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 380 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 380 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403863831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:28,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:28,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-11-13 14:24:28,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545621213] [2024-11-13 14:24:28,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:28,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:24:28,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:24:28,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=388, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:24:28,831 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 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 14:24:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:29,139 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2024-11-13 14:24:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 14:24:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 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 122 [2024-11-13 14:24:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:29,141 INFO L225 Difference]: With dead ends: 140 [2024-11-13 14:24:29,141 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 14:24:29,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 221 SyntacticMatches, 38 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=762, Invalid=1308, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:24:29,142 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:29,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 183 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 14:24:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2024-11-13 14:24:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 0 states have call successors, (0), 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 14:24:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2024-11-13 14:24:29,157 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 122 [2024-11-13 14:24:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:29,158 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2024-11-13 14:24:29,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 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 14:24:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2024-11-13 14:24:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 14:24:29,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:29,163 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:29,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:24:29,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:29,364 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:29,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash 408517554, now seen corresponding path program 23 times [2024-11-13 14:24:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:29,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314542536] [2024-11-13 14:24:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 743 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314542536] [2024-11-13 14:24:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314542536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528559965] [2024-11-13 14:24:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:24:30,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:30,564 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:30,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:24:30,745 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-13 14:24:30,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:30,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:24:30,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 800 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:31,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 800 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:32,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528559965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:32,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:32,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2024-11-13 14:24:32,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522357568] [2024-11-13 14:24:32,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:32,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 14:24:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 14:24:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=3496, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 14:24:32,679 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:33,886 INFO L93 Difference]: Finished difference Result 364 states and 411 transitions. [2024-11-13 14:24:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 14:24:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-13 14:24:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:33,888 INFO L225 Difference]: With dead ends: 364 [2024-11-13 14:24:33,888 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 14:24:33,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 37 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2886, Invalid=8886, Unknown=0, NotChecked=0, Total=11772 [2024-11-13 14:24:33,891 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 219 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:33,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 518 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:24:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 14:24:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 135. [2024-11-13 14:24:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 134 states have internal predecessors, (138), 0 states have call successors, (0), 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 14:24:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2024-11-13 14:24:33,903 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 130 [2024-11-13 14:24:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:33,903 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2024-11-13 14:24:33,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2024-11-13 14:24:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-13 14:24:33,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:33,905 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:33,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:24:34,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:24:34,106 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:34,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash -945292100, now seen corresponding path program 24 times [2024-11-13 14:24:34,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:34,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866843752] [2024-11-13 14:24:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:34,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 420 proven. 842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866843752] [2024-11-13 14:24:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866843752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567365288] [2024-11-13 14:24:34,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:24:34,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:34,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:34,944 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:34,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:24:35,151 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-13 14:24:35,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:35,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:24:35,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 462 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:35,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 462 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567365288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:35,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-11-13 14:24:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819885574] [2024-11-13 14:24:35,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:35,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:24:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:24:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:24:35,877 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 0 states have call successors, (0), 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 14:24:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:36,279 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2024-11-13 14:24:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 14:24:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 0 states have call successors, (0), 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 134 [2024-11-13 14:24:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:36,281 INFO L225 Difference]: With dead ends: 152 [2024-11-13 14:24:36,281 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 14:24:36,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 244 SyntacticMatches, 41 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=1547, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 14:24:36,282 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:36,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 240 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 14:24:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2024-11-13 14:24:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:24:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2024-11-13 14:24:36,297 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 134 [2024-11-13 14:24:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:36,297 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2024-11-13 14:24:36,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 0 states have call successors, (0), 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 14:24:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2024-11-13 14:24:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 14:24:36,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:36,299 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:36,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:24:36,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:36,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:36,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1046044962, now seen corresponding path program 25 times [2024-11-13 14:24:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786938022] [2024-11-13 14:24:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 905 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786938022] [2024-11-13 14:24:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786938022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36806639] [2024-11-13 14:24:37,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:24:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:37,917 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:37,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:24:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:38,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 14:24:38,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 966 proven. 462 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:39,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 966 proven. 462 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:24:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36806639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:40,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-11-13 14:24:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052590265] [2024-11-13 14:24:40,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:40,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 14:24:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 14:24:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 14:24:40,182 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 0 states have call successors, (0), 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 14:24:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:40,906 INFO L93 Difference]: Finished difference Result 304 states and 352 transitions. [2024-11-13 14:24:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 14:24:40,907 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 0 states have call successors, (0), 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 142 [2024-11-13 14:24:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:40,908 INFO L225 Difference]: With dead ends: 304 [2024-11-13 14:24:40,908 INFO L226 Difference]: Without dead ends: 211 [2024-11-13 14:24:40,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 218 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-11-13 14:24:40,910 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 180 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:40,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 447 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:24:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-13 14:24:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 145. [2024-11-13 14:24:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 144 states have internal predecessors, (148), 0 states have call successors, (0), 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 14:24:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2024-11-13 14:24:40,925 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 142 [2024-11-13 14:24:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:40,925 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2024-11-13 14:24:40,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 0 states have call successors, (0), 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 14:24:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2024-11-13 14:24:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-13 14:24:40,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:40,929 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:40,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:24:41,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 14:24:41,130 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:41,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 521481415, now seen corresponding path program 26 times [2024-11-13 14:24:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:41,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581548312] [2024-11-13 14:24:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:41,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 905 proven. 569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581548312] [2024-11-13 14:24:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581548312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428099739] [2024-11-13 14:24:42,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:42,394 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:42,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:24:42,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:24:42,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:42,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:24:42,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 968 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:43,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 968 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428099739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:44,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2024-11-13 14:24:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866694300] [2024-11-13 14:24:44,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:44,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 14:24:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 14:24:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 14:24:44,762 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 0 states have call successors, (0), 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 14:24:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:45,549 INFO L93 Difference]: Finished difference Result 311 states and 361 transitions. [2024-11-13 14:24:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 14:24:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 0 states have call successors, (0), 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 144 [2024-11-13 14:24:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:45,550 INFO L225 Difference]: With dead ends: 311 [2024-11-13 14:24:45,550 INFO L226 Difference]: Without dead ends: 216 [2024-11-13 14:24:45,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 219 SyntacticMatches, 44 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3380 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2309, Invalid=6811, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 14:24:45,551 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 203 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:45,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 490 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:24:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-13 14:24:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 147. [2024-11-13 14:24:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 0 states have call successors, (0), 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 14:24:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2024-11-13 14:24:45,562 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 144 [2024-11-13 14:24:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:45,562 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2024-11-13 14:24:45,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 0 states have call successors, (0), 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 14:24:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2024-11-13 14:24:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 14:24:45,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:45,563 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:45,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 14:24:45,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:24:45,764 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:45,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1072913620, now seen corresponding path program 27 times [2024-11-13 14:24:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985944417] [2024-11-13 14:24:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 506 proven. 1014 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985944417] [2024-11-13 14:24:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985944417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276488788] [2024-11-13 14:24:46,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:46,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:46,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:46,550 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:46,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:24:46,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-13 14:24:46,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:46,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 14:24:46,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 552 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:46,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 552 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276488788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:47,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-11-13 14:24:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161219061] [2024-11-13 14:24:47,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:47,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 14:24:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 14:24:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=510, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:24:47,675 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:24:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:48,093 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2024-11-13 14:24:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 14:24:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 0 states have call successors, (0), 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 146 [2024-11-13 14:24:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:48,095 INFO L225 Difference]: With dead ends: 164 [2024-11-13 14:24:48,095 INFO L226 Difference]: Without dead ends: 162 [2024-11-13 14:24:48,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 266 SyntacticMatches, 45 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1056, Invalid=1806, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 14:24:48,096 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:48,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 268 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-13 14:24:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2024-11-13 14:24:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.025974025974026) internal successors, (158), 154 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2024-11-13 14:24:48,109 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 146 [2024-11-13 14:24:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:48,109 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2024-11-13 14:24:48,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:24:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2024-11-13 14:24:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-13 14:24:48,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:48,111 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:48,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:24:48,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:48,311 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:48,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -794257518, now seen corresponding path program 28 times [2024-11-13 14:24:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827059739] [2024-11-13 14:24:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1083 proven. 621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827059739] [2024-11-13 14:24:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827059739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466614796] [2024-11-13 14:24:49,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:24:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:49,625 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:49,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:24:49,838 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:24:49,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:49,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 14:24:49,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1152 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:51,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1152 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466614796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:52,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 80 [2024-11-13 14:24:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714362526] [2024-11-13 14:24:52,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:52,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-13 14:24:52,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:52,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-13 14:24:52,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=4860, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 14:24:52,255 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:53,856 INFO L93 Difference]: Finished difference Result 432 states and 487 transitions. [2024-11-13 14:24:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-13 14:24:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-13 14:24:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:53,857 INFO L225 Difference]: With dead ends: 432 [2024-11-13 14:24:53,858 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 14:24:53,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 234 SyntacticMatches, 45 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5464 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4034, Invalid=12478, Unknown=0, NotChecked=0, Total=16512 [2024-11-13 14:24:53,859 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 330 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:53,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 712 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:24:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 14:24:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 159. [2024-11-13 14:24:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0253164556962024) internal successors, (162), 158 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2024-11-13 14:24:53,869 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 154 [2024-11-13 14:24:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:53,870 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2024-11-13 14:24:53,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2024-11-13 14:24:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-13 14:24:53,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:53,871 INFO L215 NwaCegarLoop]: trace histogram [26, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:53,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 14:24:54,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:54,071 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1990662812, now seen corresponding path program 29 times [2024-11-13 14:24:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761152323] [2024-11-13 14:24:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 600 proven. 1202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761152323] [2024-11-13 14:24:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761152323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114022519] [2024-11-13 14:24:54,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:24:54,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:54,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:54,859 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:54,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:24:55,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-13 14:24:55,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:55,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 14:24:55,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 650 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:55,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 650 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114022519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:56,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:56,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-11-13 14:24:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129222847] [2024-11-13 14:24:56,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:56,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 14:24:56,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 14:24:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:24:56,024 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 0 states have call successors, (0), 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 14:24:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:56,496 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2024-11-13 14:24:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 14:24:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 0 states have call successors, (0), 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 158 [2024-11-13 14:24:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:56,498 INFO L225 Difference]: With dead ends: 176 [2024-11-13 14:24:56,498 INFO L226 Difference]: Without dead ends: 174 [2024-11-13 14:24:56,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 287 SyntacticMatches, 50 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1221, Invalid=2085, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 14:24:56,499 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:56,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 235 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-13 14:24:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2024-11-13 14:24:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 166 states have internal predecessors, (170), 0 states have call successors, (0), 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 14:24:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2024-11-13 14:24:56,519 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 158 [2024-11-13 14:24:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:56,520 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2024-11-13 14:24:56,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 0 states have call successors, (0), 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 14:24:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2024-11-13 14:24:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-13 14:24:56,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:56,521 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:56,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:24:56,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 14:24:56,721 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:56,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash -87253246, now seen corresponding path program 30 times [2024-11-13 14:24:56,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:56,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030784871] [2024-11-13 14:24:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1277 proven. 725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030784871] [2024-11-13 14:24:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030784871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031544465] [2024-11-13 14:24:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:24:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:58,358 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:58,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:24:58,671 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-13 14:24:58,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:58,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 14:24:58,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1352 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:00,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1352 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031544465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:01,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:01,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2024-11-13 14:25:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285081484] [2024-11-13 14:25:01,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:01,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-13 14:25:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-13 14:25:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 14:25:01,648 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 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 14:25:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:03,297 INFO L93 Difference]: Finished difference Result 466 states and 525 transitions. [2024-11-13 14:25:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 14:25:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 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 166 [2024-11-13 14:25:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:03,299 INFO L225 Difference]: With dead ends: 466 [2024-11-13 14:25:03,299 INFO L226 Difference]: Without dead ends: 252 [2024-11-13 14:25:03,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 252 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6363 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2024-11-13 14:25:03,301 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 288 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:03,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 755 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:25:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-13 14:25:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 171. [2024-11-13 14:25:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 states have internal predecessors, (174), 0 states have call successors, (0), 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 14:25:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2024-11-13 14:25:03,328 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2024-11-13 14:25:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:03,328 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2024-11-13 14:25:03,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 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 14:25:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2024-11-13 14:25:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-13 14:25:03,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:03,329 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 14:25:03,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 14:25:03,530 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:03,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash -247667956, now seen corresponding path program 31 times [2024-11-13 14:25:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011253077] [2024-11-13 14:25:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 702 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011253077] [2024-11-13 14:25:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011253077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645515490] [2024-11-13 14:25:04,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:25:04,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:04,451 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:04,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:25:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:04,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 14:25:04,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 756 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:04,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 756 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645515490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:05,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-11-13 14:25:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140599546] [2024-11-13 14:25:05,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:25:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:25:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=648, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:25:05,784 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:06,415 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2024-11-13 14:25:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 14:25:06,415 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-13 14:25:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:06,421 INFO L225 Difference]: With dead ends: 188 [2024-11-13 14:25:06,421 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 14:25:06,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 309 SyntacticMatches, 54 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1398, Invalid=2384, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 14:25:06,422 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:06,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 284 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:25:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 14:25:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2024-11-13 14:25:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 0 states have call successors, (0), 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 14:25:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2024-11-13 14:25:06,441 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 170 [2024-11-13 14:25:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:06,441 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2024-11-13 14:25:06,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2024-11-13 14:25:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-13 14:25:06,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:06,443 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:06,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 14:25:06,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 14:25:06,644 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:06,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1695217522, now seen corresponding path program 32 times [2024-11-13 14:25:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775443370] [2024-11-13 14:25:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1487 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:08,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775443370] [2024-11-13 14:25:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775443370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030553194] [2024-11-13 14:25:08,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:25:08,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:08,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:08,453 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:08,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:25:08,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:25:08,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:08,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 14:25:08,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1566 proven. 756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:10,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1566 proven. 756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:11,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030553194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:11,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2024-11-13 14:25:11,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984757027] [2024-11-13 14:25:11,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:11,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-13 14:25:11,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-13 14:25:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 14:25:11,796 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 0 states have call successors, (0), 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 14:25:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:12,855 INFO L93 Difference]: Finished difference Result 382 states and 442 transitions. [2024-11-13 14:25:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 14:25:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2024-11-13 14:25:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:12,856 INFO L225 Difference]: With dead ends: 382 [2024-11-13 14:25:12,856 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 14:25:12,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 272 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2024-11-13 14:25:12,861 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 271 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:12,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 562 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:25:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 14:25:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 181. [2024-11-13 14:25:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 180 states have internal predecessors, (184), 0 states have call successors, (0), 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 14:25:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2024-11-13 14:25:12,878 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 178 [2024-11-13 14:25:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:12,878 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2024-11-13 14:25:12,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 0 states have call successors, (0), 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 14:25:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2024-11-13 14:25:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-13 14:25:12,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:12,879 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:12,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 14:25:13,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 14:25:13,080 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:13,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2077715305, now seen corresponding path program 33 times [2024-11-13 14:25:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863447821] [2024-11-13 14:25:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1487 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:14,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863447821] [2024-11-13 14:25:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863447821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:14,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55421222] [2024-11-13 14:25:14,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:25:14,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:14,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:14,866 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:14,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:25:15,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-13 14:25:15,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:15,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 14:25:15,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:17,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55421222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:18,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2024-11-13 14:25:18,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329491711] [2024-11-13 14:25:18,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:18,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-13 14:25:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-13 14:25:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 14:25:18,533 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 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 14:25:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:19,896 INFO L93 Difference]: Finished difference Result 389 states and 451 transitions. [2024-11-13 14:25:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 14:25:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 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 180 [2024-11-13 14:25:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:19,897 INFO L225 Difference]: With dead ends: 389 [2024-11-13 14:25:19,897 INFO L226 Difference]: Without dead ends: 270 [2024-11-13 14:25:19,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 273 SyntacticMatches, 56 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3605, Invalid=10675, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 14:25:19,899 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 295 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:19,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 749 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:25:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-13 14:25:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 183. [2024-11-13 14:25:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.021978021978022) internal successors, (186), 182 states have internal predecessors, (186), 0 states have call successors, (0), 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 14:25:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2024-11-13 14:25:19,915 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 180 [2024-11-13 14:25:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:19,915 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2024-11-13 14:25:19,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 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 14:25:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2024-11-13 14:25:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-13 14:25:19,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:19,917 INFO L215 NwaCegarLoop]: trace histogram [30, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:19,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 14:25:20,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 14:25:20,117 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:20,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1381203068, now seen corresponding path program 34 times [2024-11-13 14:25:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266699959] [2024-11-13 14:25:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 812 proven. 1626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266699959] [2024-11-13 14:25:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266699959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790103498] [2024-11-13 14:25:21,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:25:21,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:21,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:21,155 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:21,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 14:25:21,397 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:25:21,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:21,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 14:25:21,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:21,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:22,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790103498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:22,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:22,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-11-13 14:25:22,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097925439] [2024-11-13 14:25:22,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:22,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 14:25:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 14:25:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=723, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:25:22,623 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 0 states have call successors, (0), 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 14:25:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:23,165 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2024-11-13 14:25:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 14:25:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 0 states have call successors, (0), 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 182 [2024-11-13 14:25:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:23,167 INFO L225 Difference]: With dead ends: 200 [2024-11-13 14:25:23,167 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 14:25:23,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 331 SyntacticMatches, 58 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1587, Invalid=2703, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 14:25:23,168 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:23,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:25:23,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 14:25:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2024-11-13 14:25:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 190 states have internal predecessors, (194), 0 states have call successors, (0), 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 14:25:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2024-11-13 14:25:23,184 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 182 [2024-11-13 14:25:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:23,184 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2024-11-13 14:25:23,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 0 states have call successors, (0), 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 14:25:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2024-11-13 14:25:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-13 14:25:23,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:23,186 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:23,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 14:25:23,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 14:25:23,386 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:23,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash 342434018, now seen corresponding path program 35 times [2024-11-13 14:25:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740589144] [2024-11-13 14:25:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:23,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1713 proven. 957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740589144] [2024-11-13 14:25:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740589144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856066000] [2024-11-13 14:25:25,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:25:25,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:25,374 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:25,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 14:25:25,713 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-13 14:25:25,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:25,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 14:25:25,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:27,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856066000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:29,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:29,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 98 [2024-11-13 14:25:29,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568877130] [2024-11-13 14:25:29,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-13 14:25:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-13 14:25:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2180, Invalid=7326, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 14:25:29,172 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 0 states have call successors, (0), 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 14:25:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:31,397 INFO L93 Difference]: Finished difference Result 534 states and 601 transitions. [2024-11-13 14:25:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-13 14:25:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 0 states have call successors, (0), 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 190 [2024-11-13 14:25:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:31,398 INFO L225 Difference]: With dead ends: 534 [2024-11-13 14:25:31,398 INFO L226 Difference]: Without dead ends: 288 [2024-11-13 14:25:31,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 288 SyntacticMatches, 57 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8365 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6116, Invalid=19006, Unknown=0, NotChecked=0, Total=25122 [2024-11-13 14:25:31,400 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 349 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:31,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 836 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:25:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-13 14:25:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 195. [2024-11-13 14:25:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0206185567010309) internal successors, (198), 194 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2024-11-13 14:25:31,434 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 190 [2024-11-13 14:25:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:31,435 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2024-11-13 14:25:31,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 0 states have call successors, (0), 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 14:25:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2024-11-13 14:25:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-13 14:25:31,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:31,436 INFO L215 NwaCegarLoop]: trace histogram [32, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:31,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 14:25:31,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 14:25:31,637 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:31,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1188010260, now seen corresponding path program 36 times [2024-11-13 14:25:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:31,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184691557] [2024-11-13 14:25:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 930 proven. 1862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184691557] [2024-11-13 14:25:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184691557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729120877] [2024-11-13 14:25:32,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:25:32,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:32,867 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 14:25:33,220 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-11-13 14:25:33,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:33,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 14:25:33,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:33,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729120877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:34,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-11-13 14:25:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393902776] [2024-11-13 14:25:34,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 14:25:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 14:25:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=802, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:25:34,546 INFO L87 Difference]: Start difference. First operand 195 states and 198 transitions. Second operand has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:35,103 INFO L93 Difference]: Finished difference Result 212 states and 216 transitions. [2024-11-13 14:25:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 14:25:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-13 14:25:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:35,105 INFO L225 Difference]: With dead ends: 212 [2024-11-13 14:25:35,105 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 14:25:35,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 353 SyntacticMatches, 62 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1788, Invalid=3042, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 14:25:35,106 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 11 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:35,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 253 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:25:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 14:25:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2024-11-13 14:25:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 202 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2024-11-13 14:25:35,124 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 194 [2024-11-13 14:25:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:35,124 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2024-11-13 14:25:35,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2024-11-13 14:25:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-13 14:25:35,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:35,126 INFO L215 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:35,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 14:25:35,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 14:25:35,327 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:35,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1252825938, now seen corresponding path program 37 times [2024-11-13 14:25:35,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:35,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945598083] [2024-11-13 14:25:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:35,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1955 proven. 1085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945598083] [2024-11-13 14:25:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945598083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906138402] [2024-11-13 14:25:37,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:25:37,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:37,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:37,646 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:37,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 14:25:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:37,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 14:25:37,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:40,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906138402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:41,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:41,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-11-13 14:25:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808750100] [2024-11-13 14:25:41,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:41,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-13 14:25:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-13 14:25:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 14:25:41,698 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 0 states have call successors, (0), 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 14:25:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:43,072 INFO L93 Difference]: Finished difference Result 434 states and 502 transitions. [2024-11-13 14:25:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-13 14:25:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 0 states have call successors, (0), 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 202 [2024-11-13 14:25:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:43,074 INFO L225 Difference]: With dead ends: 434 [2024-11-13 14:25:43,074 INFO L226 Difference]: Without dead ends: 301 [2024-11-13 14:25:43,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 308 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-11-13 14:25:43,075 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 328 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:43,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 812 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:25:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-13 14:25:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 205. [2024-11-13 14:25:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0196078431372548) internal successors, (208), 204 states have internal predecessors, (208), 0 states have call successors, (0), 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 14:25:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2024-11-13 14:25:43,095 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 202 [2024-11-13 14:25:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:43,095 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2024-11-13 14:25:43,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 0 states have call successors, (0), 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 14:25:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2024-11-13 14:25:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-13 14:25:43,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:43,097 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:43,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 14:25:43,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 14:25:43,301 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -587310729, now seen corresponding path program 38 times [2024-11-13 14:25:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287694886] [2024-11-13 14:25:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 1955 proven. 1149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287694886] [2024-11-13 14:25:45,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287694886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208048733] [2024-11-13 14:25:45,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:25:45,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:45,501 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:45,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 14:25:45,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:25:45,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:45,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 14:25:45,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:48,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208048733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:49,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:49,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2024-11-13 14:25:49,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840552296] [2024-11-13 14:25:49,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:49,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-13 14:25:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-13 14:25:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2383, Invalid=8123, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 14:25:49,665 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 0 states have call successors, (0), 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 14:25:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:51,112 INFO L93 Difference]: Finished difference Result 441 states and 511 transitions. [2024-11-13 14:25:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 14:25:51,112 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 0 states have call successors, (0), 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 204 [2024-11-13 14:25:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:51,114 INFO L225 Difference]: With dead ends: 441 [2024-11-13 14:25:51,114 INFO L226 Difference]: Without dead ends: 306 [2024-11-13 14:25:51,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 309 SyntacticMatches, 64 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6840 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4629, Invalid=13731, Unknown=0, NotChecked=0, Total=18360 [2024-11-13 14:25:51,116 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 371 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:51,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 765 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:25:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-13 14:25:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 207. [2024-11-13 14:25:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0194174757281553) internal successors, (210), 206 states have internal predecessors, (210), 0 states have call successors, (0), 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 14:25:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2024-11-13 14:25:51,136 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 204 [2024-11-13 14:25:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:51,137 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2024-11-13 14:25:51,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 0 states have call successors, (0), 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 14:25:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2024-11-13 14:25:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-13 14:25:51,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:51,138 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:51,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 14:25:51,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-13 14:25:51,339 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:51,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 567878236, now seen corresponding path program 39 times [2024-11-13 14:25:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091042220] [2024-11-13 14:25:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1056 proven. 2114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091042220] [2024-11-13 14:25:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091042220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012570133] [2024-11-13 14:25:52,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:25:52,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:52,659 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:52,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 14:25:53,015 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-11-13 14:25:53,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:53,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 14:25:53,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:53,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012570133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:54,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-11-13 14:25:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416727403] [2024-11-13 14:25:54,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:54,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 14:25:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:54,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 14:25:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=885, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:25:54,582 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 0 states have call successors, (0), 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 14:25:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:55,209 INFO L93 Difference]: Finished difference Result 224 states and 228 transitions. [2024-11-13 14:25:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 14:25:55,209 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 0 states have call successors, (0), 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 206 [2024-11-13 14:25:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:55,210 INFO L225 Difference]: With dead ends: 224 [2024-11-13 14:25:55,210 INFO L226 Difference]: Without dead ends: 222 [2024-11-13 14:25:55,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 376 SyntacticMatches, 65 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2001, Invalid=3401, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 14:25:55,211 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:55,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 343 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:25:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-13 14:25:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 215. [2024-11-13 14:25:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 214 states have internal predecessors, (218), 0 states have call successors, (0), 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 14:25:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions. [2024-11-13 14:25:55,223 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 206 [2024-11-13 14:25:55,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:55,223 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions. [2024-11-13 14:25:55,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 0 states have call successors, (0), 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 14:25:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions. [2024-11-13 14:25:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-13 14:25:55,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:55,224 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:55,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-13 14:25:55,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 14:25:55,424 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:55,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1717233346, now seen corresponding path program 40 times [2024-11-13 14:25:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373774615] [2024-11-13 14:25:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2213 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373774615] [2024-11-13 14:25:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373774615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232341677] [2024-11-13 14:25:57,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:25:57,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:57,932 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:57,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 14:25:58,231 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:25:58,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:58,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-13 14:25:58,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:00,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232341677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:02,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:02,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 110 [2024-11-13 14:26:02,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086133858] [2024-11-13 14:26:02,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:02,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-13 14:26:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-13 14:26:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2740, Invalid=9250, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 14:26:02,549 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:05,221 INFO L93 Difference]: Finished difference Result 602 states and 677 transitions. [2024-11-13 14:26:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-13 14:26:05,222 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2024-11-13 14:26:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:05,223 INFO L225 Difference]: With dead ends: 602 [2024-11-13 14:26:05,223 INFO L226 Difference]: Without dead ends: 324 [2024-11-13 14:26:05,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 324 SyntacticMatches, 65 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10639 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7744, Invalid=24118, Unknown=0, NotChecked=0, Total=31862 [2024-11-13 14:26:05,225 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 471 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:05,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1073 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:26:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-13 14:26:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 219. [2024-11-13 14:26:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.018348623853211) internal successors, (222), 218 states have internal predecessors, (222), 0 states have call successors, (0), 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 14:26:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2024-11-13 14:26:05,242 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 214 [2024-11-13 14:26:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:05,242 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2024-11-13 14:26:05,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2024-11-13 14:26:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-13 14:26:05,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:05,244 INFO L215 NwaCegarLoop]: trace histogram [36, 35, 35, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:05,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 14:26:05,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:05,445 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:05,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1158885068, now seen corresponding path program 41 times [2024-11-13 14:26:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433288205] [2024-11-13 14:26:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1190 proven. 2382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:06,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433288205] [2024-11-13 14:26:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433288205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797705360] [2024-11-13 14:26:06,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:26:06,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:06,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:06,921 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:06,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 14:26:07,302 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-11-13 14:26:07,302 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:07,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 14:26:07,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:07,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797705360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:08,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:08,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-11-13 14:26:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385395964] [2024-11-13 14:26:08,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:08,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 14:26:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 14:26:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=972, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:26:08,823 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 0 states have call successors, (0), 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 14:26:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:09,590 INFO L93 Difference]: Finished difference Result 236 states and 240 transitions. [2024-11-13 14:26:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-13 14:26:09,590 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 0 states have call successors, (0), 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 218 [2024-11-13 14:26:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:09,592 INFO L225 Difference]: With dead ends: 236 [2024-11-13 14:26:09,592 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 14:26:09,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 397 SyntacticMatches, 70 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2226, Invalid=3780, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 14:26:09,593 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 15 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:09,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 456 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 14:26:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 227. [2024-11-13 14:26:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0176991150442478) internal successors, (230), 226 states have internal predecessors, (230), 0 states have call successors, (0), 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 14:26:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2024-11-13 14:26:09,616 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 218 [2024-11-13 14:26:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:09,616 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 230 transitions. [2024-11-13 14:26:09,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 0 states have call successors, (0), 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 14:26:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 230 transitions. [2024-11-13 14:26:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-13 14:26:09,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:09,618 INFO L215 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:09,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 14:26:09,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:09,819 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:09,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1028029646, now seen corresponding path program 42 times [2024-11-13 14:26:09,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:09,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131239204] [2024-11-13 14:26:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:09,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2487 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131239204] [2024-11-13 14:26:12,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131239204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568548793] [2024-11-13 14:26:12,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:26:12,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:12,609 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 14:26:12,999 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-11-13 14:26:12,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:13,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 14:26:13,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:15,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568548793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:17,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:17,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 116 [2024-11-13 14:26:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570512054] [2024-11-13 14:26:17,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:17,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-13 14:26:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-13 14:26:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3044, Invalid=10296, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 14:26:17,632 INFO L87 Difference]: Start difference. First operand 227 states and 230 transitions. Second operand has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 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 14:26:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:20,723 INFO L93 Difference]: Finished difference Result 636 states and 715 transitions. [2024-11-13 14:26:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 14:26:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 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 226 [2024-11-13 14:26:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:20,724 INFO L225 Difference]: With dead ends: 636 [2024-11-13 14:26:20,724 INFO L226 Difference]: Without dead ends: 342 [2024-11-13 14:26:20,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 342 SyntacticMatches, 69 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11878 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=8630, Invalid=26902, Unknown=0, NotChecked=0, Total=35532 [2024-11-13 14:26:20,727 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 558 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:20,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 949 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:26:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-13 14:26:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 231. [2024-11-13 14:26:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.017391304347826) internal successors, (234), 230 states have internal predecessors, (234), 0 states have call successors, (0), 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 14:26:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 234 transitions. [2024-11-13 14:26:20,750 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 234 transitions. Word has length 226 [2024-11-13 14:26:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:20,751 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 234 transitions. [2024-11-13 14:26:20,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 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 14:26:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 234 transitions. [2024-11-13 14:26:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-13 14:26:20,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:20,752 INFO L215 NwaCegarLoop]: trace histogram [38, 37, 37, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:20,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 14:26:20,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 14:26:20,952 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:20,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2019822652, now seen corresponding path program 43 times [2024-11-13 14:26:20,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:20,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795390160] [2024-11-13 14:26:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1332 proven. 2666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:22,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795390160] [2024-11-13 14:26:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795390160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000820650] [2024-11-13 14:26:22,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:26:22,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:22,652 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:22,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 14:26:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:22,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-13 14:26:22,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:23,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000820650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:24,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:24,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-11-13 14:26:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020658822] [2024-11-13 14:26:24,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 14:26:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 14:26:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1063, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 14:26:24,766 INFO L87 Difference]: Start difference. First operand 231 states and 234 transitions. Second operand has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 0 states have call successors, (0), 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 14:26:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:25,506 INFO L93 Difference]: Finished difference Result 248 states and 252 transitions. [2024-11-13 14:26:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 14:26:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 0 states have call successors, (0), 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 230 [2024-11-13 14:26:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:25,507 INFO L225 Difference]: With dead ends: 248 [2024-11-13 14:26:25,507 INFO L226 Difference]: Without dead ends: 246 [2024-11-13 14:26:25,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 419 SyntacticMatches, 74 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3243 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2463, Invalid=4179, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 14:26:25,509 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:25,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 317 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-13 14:26:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 239. [2024-11-13 14:26:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0168067226890756) internal successors, (242), 238 states have internal predecessors, (242), 0 states have call successors, (0), 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 14:26:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 242 transitions. [2024-11-13 14:26:25,543 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 242 transitions. Word has length 230 [2024-11-13 14:26:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:25,543 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 242 transitions. [2024-11-13 14:26:25,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 0 states have call successors, (0), 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 14:26:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 242 transitions. [2024-11-13 14:26:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-13 14:26:25,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:25,545 INFO L215 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:25,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 14:26:25,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:25,746 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:25,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1748111198, now seen corresponding path program 44 times [2024-11-13 14:26:25,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606352054] [2024-11-13 14:26:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2777 proven. 1517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606352054] [2024-11-13 14:26:28,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606352054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191905467] [2024-11-13 14:26:28,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:26:28,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:28,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:28,880 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 14:26:29,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:26:29,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:29,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 14:26:29,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:26:32,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:26:34,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191905467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:34,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:34,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 119 [2024-11-13 14:26:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130894632] [2024-11-13 14:26:34,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:34,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-13 14:26:34,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-13 14:26:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=10879, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 14:26:34,604 INFO L87 Difference]: Start difference. First operand 239 states and 242 transitions. Second operand has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 0 states have call successors, (0), 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 14:26:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:36,510 INFO L93 Difference]: Finished difference Result 512 states and 592 transitions. [2024-11-13 14:26:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 14:26:36,510 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 0 states have call successors, (0), 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 238 [2024-11-13 14:26:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:36,512 INFO L225 Difference]: With dead ends: 512 [2024-11-13 14:26:36,512 INFO L226 Difference]: Without dead ends: 355 [2024-11-13 14:26:36,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 362 SyntacticMatches, 74 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9171 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=6129, Invalid=18363, Unknown=0, NotChecked=0, Total=24492 [2024-11-13 14:26:36,514 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 358 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:36,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1083 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:26:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-13 14:26:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 241. [2024-11-13 14:26:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0166666666666666) internal successors, (244), 240 states have internal predecessors, (244), 0 states have call successors, (0), 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 14:26:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2024-11-13 14:26:36,536 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 238 [2024-11-13 14:26:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:36,536 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2024-11-13 14:26:36,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 0 states have call successors, (0), 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 14:26:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2024-11-13 14:26:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-13 14:26:36,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:36,537 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:36,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 14:26:36,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:36,738 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:36,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2077900871, now seen corresponding path program 45 times [2024-11-13 14:26:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:36,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891157475] [2024-11-13 14:26:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2777 proven. 1593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891157475] [2024-11-13 14:26:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891157475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991439215] [2024-11-13 14:26:40,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:26:40,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:40,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:40,224 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:40,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 14:26:40,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-11-13 14:26:40,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:40,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 14:26:40,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:43,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991439215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:45,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 121 [2024-11-13 14:26:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894864948] [2024-11-13 14:26:45,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:45,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-13 14:26:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-13 14:26:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3283, Invalid=11237, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 14:26:45,999 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 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 14:26:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:48,063 INFO L93 Difference]: Finished difference Result 519 states and 601 transitions. [2024-11-13 14:26:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 14:26:48,064 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 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 240 [2024-11-13 14:26:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:48,065 INFO L225 Difference]: With dead ends: 519 [2024-11-13 14:26:48,065 INFO L226 Difference]: Without dead ends: 360 [2024-11-13 14:26:48,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 363 SyntacticMatches, 76 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9492 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=6405, Invalid=19035, Unknown=0, NotChecked=0, Total=25440 [2024-11-13 14:26:48,068 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 405 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:48,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 930 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:26:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-13 14:26:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 243. [2024-11-13 14:26:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0165289256198347) internal successors, (246), 242 states have internal predecessors, (246), 0 states have call successors, (0), 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 14:26:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 246 transitions. [2024-11-13 14:26:48,099 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 246 transitions. Word has length 240 [2024-11-13 14:26:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:48,099 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 246 transitions. [2024-11-13 14:26:48,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 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 14:26:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 246 transitions. [2024-11-13 14:26:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-13 14:26:48,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:48,101 INFO L215 NwaCegarLoop]: trace histogram [40, 39, 39, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:48,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 14:26:48,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:48,302 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:48,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1911473492, now seen corresponding path program 46 times [2024-11-13 14:26:48,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:48,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378953082] [2024-11-13 14:26:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1482 proven. 2966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378953082] [2024-11-13 14:26:50,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378953082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819818300] [2024-11-13 14:26:50,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:26:50,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:50,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:50,453 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:50,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 14:26:50,814 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:26:50,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:50,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-13 14:26:50,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:51,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819818300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:52,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:52,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-11-13 14:26:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927850281] [2024-11-13 14:26:52,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:52,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 14:26:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 14:26:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=912, Invalid=1158, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:26:52,624 INFO L87 Difference]: Start difference. First operand 243 states and 246 transitions. Second operand has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 0 states have call successors, (0), 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 14:26:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:53,439 INFO L93 Difference]: Finished difference Result 260 states and 264 transitions. [2024-11-13 14:26:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-13 14:26:53,440 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-13 14:26:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:53,441 INFO L225 Difference]: With dead ends: 260 [2024-11-13 14:26:53,441 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 14:26:53,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 441 SyntacticMatches, 78 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2712, Invalid=4598, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 14:26:53,442 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:53,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 400 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 14:26:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2024-11-13 14:26:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.016) internal successors, (254), 250 states have internal predecessors, (254), 0 states have call successors, (0), 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 14:26:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2024-11-13 14:26:53,466 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 242 [2024-11-13 14:26:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:53,467 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2024-11-13 14:26:53,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 0 states have call successors, (0), 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 14:26:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2024-11-13 14:26:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-13 14:26:53,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:53,468 INFO L215 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:53,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 14:26:53,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:53,672 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -631394542, now seen corresponding path program 47 times [2024-11-13 14:26:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88833615] [2024-11-13 14:26:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3083 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:56,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88833615] [2024-11-13 14:26:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88833615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231163975] [2024-11-13 14:26:56,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:26:56,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:56,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:56,970 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:56,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 14:26:57,456 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-11-13 14:26:57,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:57,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 14:26:57,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:01,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231163975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:03,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 128 [2024-11-13 14:27:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116940366] [2024-11-13 14:27:03,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:03,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-13 14:27:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:03,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-13 14:27:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3700, Invalid=12556, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 14:27:03,482 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 0 states have call successors, (0), 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 14:27:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:07,104 INFO L93 Difference]: Finished difference Result 704 states and 791 transitions. [2024-11-13 14:27:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-13 14:27:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 0 states have call successors, (0), 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 250 [2024-11-13 14:27:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:07,106 INFO L225 Difference]: With dead ends: 704 [2024-11-13 14:27:07,106 INFO L226 Difference]: Without dead ends: 378 [2024-11-13 14:27:07,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 378 SyntacticMatches, 77 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14560 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=10546, Invalid=32926, Unknown=0, NotChecked=0, Total=43472 [2024-11-13 14:27:07,110 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 508 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:07,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1495 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:27:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-13 14:27:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 255. [2024-11-13 14:27:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.015748031496063) internal successors, (258), 254 states have internal predecessors, (258), 0 states have call successors, (0), 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 14:27:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 258 transitions. [2024-11-13 14:27:07,138 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 258 transitions. Word has length 250 [2024-11-13 14:27:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:07,138 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 258 transitions. [2024-11-13 14:27:07,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 0 states have call successors, (0), 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 14:27:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 258 transitions. [2024-11-13 14:27:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-13 14:27:07,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:07,140 INFO L215 NwaCegarLoop]: trace histogram [42, 41, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:07,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 14:27:07,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:07,340 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:07,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1256179172, now seen corresponding path program 48 times [2024-11-13 14:27:07,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215093270] [2024-11-13 14:27:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1640 proven. 3282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:09,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215093270] [2024-11-13 14:27:09,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215093270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:09,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015647694] [2024-11-13 14:27:09,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:27:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:09,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:09,312 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:09,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 14:27:09,855 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-13 14:27:09,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:09,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 14:27:09,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:10,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015647694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:11,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-11-13 14:27:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196038952] [2024-11-13 14:27:11,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:11,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 14:27:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 14:27:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=1257, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:27:11,818 INFO L87 Difference]: Start difference. First operand 255 states and 258 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 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 14:27:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:12,675 INFO L93 Difference]: Finished difference Result 272 states and 276 transitions. [2024-11-13 14:27:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-13 14:27:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 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 254 [2024-11-13 14:27:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:12,676 INFO L225 Difference]: With dead ends: 272 [2024-11-13 14:27:12,676 INFO L226 Difference]: Without dead ends: 270 [2024-11-13 14:27:12,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 464 SyntacticMatches, 81 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2973, Invalid=5037, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 14:27:12,677 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:12,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 408 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:27:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-13 14:27:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 263. [2024-11-13 14:27:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.015267175572519) internal successors, (266), 262 states have internal predecessors, (266), 0 states have call successors, (0), 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 14:27:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 266 transitions. [2024-11-13 14:27:12,705 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 266 transitions. Word has length 254 [2024-11-13 14:27:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:12,705 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 266 transitions. [2024-11-13 14:27:12,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 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 14:27:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 266 transitions. [2024-11-13 14:27:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-13 14:27:12,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:12,707 INFO L215 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:12,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-13 14:27:12,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:12,907 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:12,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash 468598402, now seen corresponding path program 49 times [2024-11-13 14:27:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:12,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017867975] [2024-11-13 14:27:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3405 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017867975] [2024-11-13 14:27:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017867975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143279573] [2024-11-13 14:27:16,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:27:16,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:16,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:16,484 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:16,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 14:27:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:16,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 14:27:16,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:27:20,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:27:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143279573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:22,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86, 86] total 131 [2024-11-13 14:27:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142064333] [2024-11-13 14:27:22,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:22,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-13 14:27:22,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-13 14:27:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=13199, Unknown=0, NotChecked=0, Total=17030 [2024-11-13 14:27:22,903 INFO L87 Difference]: Start difference. First operand 263 states and 266 transitions. Second operand has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 0 states have call successors, (0), 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 14:27:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:25,025 INFO L93 Difference]: Finished difference Result 564 states and 652 transitions. [2024-11-13 14:27:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-13 14:27:25,025 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 0 states have call successors, (0), 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 262 [2024-11-13 14:27:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:25,026 INFO L225 Difference]: With dead ends: 564 [2024-11-13 14:27:25,026 INFO L226 Difference]: Without dead ends: 391 [2024-11-13 14:27:25,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 398 SyntacticMatches, 82 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11147 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7445, Invalid=22311, Unknown=0, NotChecked=0, Total=29756 [2024-11-13 14:27:25,028 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 395 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:25,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 927 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:27:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-13 14:27:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 265. [2024-11-13 14:27:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.0151515151515151) internal successors, (268), 264 states have internal predecessors, (268), 0 states have call successors, (0), 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 14:27:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 268 transitions. [2024-11-13 14:27:25,045 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 268 transitions. Word has length 262 [2024-11-13 14:27:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:25,046 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 268 transitions. [2024-11-13 14:27:25,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 0 states have call successors, (0), 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 14:27:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 268 transitions. [2024-11-13 14:27:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-13 14:27:25,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:25,047 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:25,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-13 14:27:25,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:25,247 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:25,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1226887385, now seen corresponding path program 50 times [2024-11-13 14:27:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:25,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343191920] [2024-11-13 14:27:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3405 proven. 1929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343191920] [2024-11-13 14:27:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343191920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278279765] [2024-11-13 14:27:29,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:27:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:29,010 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:29,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 14:27:29,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:27:29,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:29,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 14:27:29,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 1806 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:32,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 1806 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:36,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278279765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:36,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:36,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 46, 46] total 132 [2024-11-13 14:27:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795794522] [2024-11-13 14:27:36,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:36,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-13 14:27:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-13 14:27:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=14364, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 14:27:36,908 INFO L87 Difference]: Start difference. First operand 265 states and 268 transitions. Second operand has 132 states, 132 states have (on average 3.984848484848485) internal successors, (526), 132 states have internal predecessors, (526), 0 states have call successors, (0), 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 14:27:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:44,121 INFO L93 Difference]: Finished difference Result 576 states and 667 transitions. [2024-11-13 14:27:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2024-11-13 14:27:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.984848484848485) internal successors, (526), 132 states have internal predecessors, (526), 0 states have call successors, (0), 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 264 [2024-11-13 14:27:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:44,123 INFO L225 Difference]: With dead ends: 576 [2024-11-13 14:27:44,123 INFO L226 Difference]: Without dead ends: 401 [2024-11-13 14:27:44,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 441 SyntacticMatches, 86 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49726 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=18355, Invalid=100325, Unknown=0, NotChecked=0, Total=118680 [2024-11-13 14:27:44,129 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 720 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:44,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 817 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:27:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-13 14:27:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 271. [2024-11-13 14:27:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.0148148148148148) internal successors, (274), 270 states have internal predecessors, (274), 0 states have call successors, (0), 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 14:27:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 274 transitions. [2024-11-13 14:27:44,162 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 274 transitions. Word has length 264 [2024-11-13 14:27:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:44,163 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 274 transitions. [2024-11-13 14:27:44,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.984848484848485) internal successors, (526), 132 states have internal predecessors, (526), 0 states have call successors, (0), 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 14:27:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 274 transitions. [2024-11-13 14:27:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-13 14:27:44,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:44,165 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:44,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 14:27:44,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:44,365 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1739468159, now seen corresponding path program 51 times [2024-11-13 14:27:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87746292] [2024-11-13 14:27:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3572 proven. 2018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:48,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:48,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87746292] [2024-11-13 14:27:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87746292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:48,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009372087] [2024-11-13 14:27:48,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:27:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:48,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:48,373 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-13 14:27:48,958 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-11-13 14:27:48,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:48,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-13 14:27:48,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:52,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009372087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:55,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 136 [2024-11-13 14:27:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655782301] [2024-11-13 14:27:55,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:55,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-11-13 14:27:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-11-13 14:27:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4143, Invalid=14217, Unknown=0, NotChecked=0, Total=18360 [2024-11-13 14:27:55,864 INFO L87 Difference]: Start difference. First operand 271 states and 274 transitions. Second operand has 136 states, 136 states have (on average 3.3088235294117645) internal successors, (450), 136 states have internal predecessors, (450), 0 states have call successors, (0), 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 14:27:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:58,169 INFO L93 Difference]: Finished difference Result 584 states and 676 transitions. [2024-11-13 14:27:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-13 14:27:58,169 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.3088235294117645) internal successors, (450), 136 states have internal predecessors, (450), 0 states have call successors, (0), 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 270 [2024-11-13 14:27:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:58,171 INFO L225 Difference]: With dead ends: 584 [2024-11-13 14:27:58,171 INFO L226 Difference]: Without dead ends: 405 [2024-11-13 14:27:58,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 408 SyntacticMatches, 86 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12032 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=8105, Invalid=24115, Unknown=0, NotChecked=0, Total=32220 [2024-11-13 14:27:58,173 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 371 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:58,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 991 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:27:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-13 14:27:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 273. [2024-11-13 14:27:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.0147058823529411) internal successors, (276), 272 states have internal predecessors, (276), 0 states have call successors, (0), 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 14:27:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 276 transitions. [2024-11-13 14:27:58,204 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 276 transitions. Word has length 270 [2024-11-13 14:27:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:58,204 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 276 transitions. [2024-11-13 14:27:58,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.3088235294117645) internal successors, (450), 136 states have internal predecessors, (450), 0 states have call successors, (0), 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 14:27:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 276 transitions. [2024-11-13 14:27:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-13 14:27:58,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:58,206 INFO L215 NwaCegarLoop]: trace histogram [45, 44, 44, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:58,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:58,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 14:27:58,410 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash -892688092, now seen corresponding path program 52 times [2024-11-13 14:27:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524477293] [2024-11-13 14:27:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1892 proven. 3786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:00,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524477293] [2024-11-13 14:28:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524477293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747446834] [2024-11-13 14:28:00,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:28:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:00,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:00,845 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-13 14:28:01,272 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:28:01,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:01,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-13 14:28:01,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:01,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747446834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:03,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-11-13 14:28:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874961023] [2024-11-13 14:28:03,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:03,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 14:28:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 14:28:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=1413, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 14:28:03,439 INFO L87 Difference]: Start difference. First operand 273 states and 276 transitions. Second operand has 51 states, 51 states have (on average 5.784313725490196) internal successors, (295), 51 states have internal predecessors, (295), 0 states have call successors, (0), 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 14:28:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:04,387 INFO L93 Difference]: Finished difference Result 290 states and 294 transitions. [2024-11-13 14:28:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-13 14:28:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.784313725490196) internal successors, (295), 51 states have internal predecessors, (295), 0 states have call successors, (0), 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 272 [2024-11-13 14:28:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:04,388 INFO L225 Difference]: With dead ends: 290 [2024-11-13 14:28:04,388 INFO L226 Difference]: Without dead ends: 288 [2024-11-13 14:28:04,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 497 SyntacticMatches, 87 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4431 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3387, Invalid=5733, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 14:28:04,389 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:04,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 385 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:28:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-13 14:28:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 281. [2024-11-13 14:28:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0142857142857142) internal successors, (284), 280 states have internal predecessors, (284), 0 states have call successors, (0), 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 14:28:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 284 transitions. [2024-11-13 14:28:04,406 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 284 transitions. Word has length 272 [2024-11-13 14:28:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:04,406 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 284 transitions. [2024-11-13 14:28:04,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.784313725490196) internal successors, (295), 51 states have internal predecessors, (295), 0 states have call successors, (0), 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 14:28:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 284 transitions. [2024-11-13 14:28:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 14:28:04,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:04,407 INFO L215 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:04,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-13 14:28:04,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-13 14:28:04,608 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:04,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash 903685514, now seen corresponding path program 53 times [2024-11-13 14:28:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:04,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188810978] [2024-11-13 14:28:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 3918 proven. 2112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:08,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:08,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188810978] [2024-11-13 14:28:08,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188810978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:08,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059301644] [2024-11-13 14:28:08,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:28:08,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:08,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:08,722 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:08,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 14:28:09,271 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-13 14:28:09,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:09,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-13 14:28:09,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:13,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059301644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:16,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 143 [2024-11-13 14:28:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030941454] [2024-11-13 14:28:16,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:16,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-13 14:28:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-13 14:28:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4610, Invalid=15696, Unknown=0, NotChecked=0, Total=20306 [2024-11-13 14:28:16,199 INFO L87 Difference]: Start difference. First operand 281 states and 284 transitions. Second operand has 143 states, 143 states have (on average 3.335664335664336) internal successors, (477), 143 states have internal predecessors, (477), 0 states have call successors, (0), 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 14:28:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:20,459 INFO L93 Difference]: Finished difference Result 789 states and 886 transitions. [2024-11-13 14:28:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-13 14:28:20,460 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 3.335664335664336) internal successors, (477), 143 states have internal predecessors, (477), 0 states have call successors, (0), 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 280 [2024-11-13 14:28:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:20,461 INFO L225 Difference]: With dead ends: 789 [2024-11-13 14:28:20,461 INFO L226 Difference]: Without dead ends: 423 [2024-11-13 14:28:20,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 423 SyntacticMatches, 87 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18295 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=13211, Invalid=41311, Unknown=0, NotChecked=0, Total=54522 [2024-11-13 14:28:20,463 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 534 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:20,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1393 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:28:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-13 14:28:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 285. [2024-11-13 14:28:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.0140845070422535) internal successors, (288), 284 states have internal predecessors, (288), 0 states have call successors, (0), 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 14:28:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 288 transitions. [2024-11-13 14:28:20,484 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 288 transitions. Word has length 280 [2024-11-13 14:28:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:20,484 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 288 transitions. [2024-11-13 14:28:20,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 3.335664335664336) internal successors, (477), 143 states have internal predecessors, (477), 0 states have call successors, (0), 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 14:28:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 288 transitions. [2024-11-13 14:28:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-13 14:28:20,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:20,485 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:20,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 14:28:20,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-13 14:28:20,686 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:20,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2030943468, now seen corresponding path program 54 times [2024-11-13 14:28:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598808246] [2024-11-13 14:28:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2070 proven. 4142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:23,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:23,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598808246] [2024-11-13 14:28:23,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598808246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:23,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117113631] [2024-11-13 14:28:23,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:28:23,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:23,164 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:23,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-13 14:28:23,742 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-11-13 14:28:23,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:23,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 14:28:23,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:24,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:26,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117113631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:26,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:26,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-11-13 14:28:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397114016] [2024-11-13 14:28:26,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:26,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 14:28:26,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 14:28:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1234, Invalid=1522, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 14:28:26,058 INFO L87 Difference]: Start difference. First operand 285 states and 288 transitions. Second operand has 53 states, 53 states have (on average 5.7924528301886795) internal successors, (307), 53 states have internal predecessors, (307), 0 states have call successors, (0), 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 14:28:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:27,078 INFO L93 Difference]: Finished difference Result 302 states and 306 transitions. [2024-11-13 14:28:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-13 14:28:27,078 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.7924528301886795) internal successors, (307), 53 states have internal predecessors, (307), 0 states have call successors, (0), 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 284 [2024-11-13 14:28:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:27,080 INFO L225 Difference]: With dead ends: 302 [2024-11-13 14:28:27,080 INFO L226 Difference]: Without dead ends: 300 [2024-11-13 14:28:27,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 519 SyntacticMatches, 91 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3678, Invalid=6222, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 14:28:27,081 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 15 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:27,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 448 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:28:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-13 14:28:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 293. [2024-11-13 14:28:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0136986301369864) internal successors, (296), 292 states have internal predecessors, (296), 0 states have call successors, (0), 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 14:28:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 296 transitions. [2024-11-13 14:28:27,113 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 296 transitions. Word has length 284 [2024-11-13 14:28:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:27,114 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 296 transitions. [2024-11-13 14:28:27,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.7924528301886795) internal successors, (307), 53 states have internal predecessors, (307), 0 states have call successors, (0), 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 14:28:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 296 transitions. [2024-11-13 14:28:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-13 14:28:27,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:27,116 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:27,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-13 14:28:27,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 14:28:27,317 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:27,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1048326278, now seen corresponding path program 55 times [2024-11-13 14:28:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272176321] [2024-11-13 14:28:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4280 proven. 2300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272176321] [2024-11-13 14:28:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272176321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714774805] [2024-11-13 14:28:32,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:28:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:32,049 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:32,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-13 14:28:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:32,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-13 14:28:32,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:28:36,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:28:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714774805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:39,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:39,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2024-11-13 14:28:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801836896] [2024-11-13 14:28:39,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:39,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-13 14:28:39,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:39,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-13 14:28:39,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2024-11-13 14:28:39,865 INFO L87 Difference]: Start difference. First operand 293 states and 296 transitions. Second operand has 146 states, 146 states have (on average 3.3424657534246576) internal successors, (488), 146 states have internal predecessors, (488), 0 states have call successors, (0), 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 14:28:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:42,646 INFO L93 Difference]: Finished difference Result 629 states and 727 transitions. [2024-11-13 14:28:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 14:28:42,646 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.3424657534246576) internal successors, (488), 146 states have internal predecessors, (488), 0 states have call successors, (0), 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 292 [2024-11-13 14:28:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:42,648 INFO L225 Difference]: With dead ends: 629 [2024-11-13 14:28:42,648 INFO L226 Difference]: Without dead ends: 436 [2024-11-13 14:28:42,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 443 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2024-11-13 14:28:42,650 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 386 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:42,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1401 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:28:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-13 14:28:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 295. [2024-11-13 14:28:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.0136054421768708) internal successors, (298), 294 states have internal predecessors, (298), 0 states have call successors, (0), 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 14:28:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 298 transitions. [2024-11-13 14:28:42,684 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 298 transitions. Word has length 292 [2024-11-13 14:28:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:42,684 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 298 transitions. [2024-11-13 14:28:42,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.3424657534246576) internal successors, (488), 146 states have internal predecessors, (488), 0 states have call successors, (0), 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 14:28:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 298 transitions. [2024-11-13 14:28:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-13 14:28:42,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:42,686 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:42,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-13 14:28:42,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-13 14:28:42,887 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:42,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1312411999, now seen corresponding path program 56 times [2024-11-13 14:28:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276513443] [2024-11-13 14:28:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4280 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276513443] [2024-11-13 14:28:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276513443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560879500] [2024-11-13 14:28:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:28:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:47,564 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:47,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 14:28:48,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:28:48,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:48,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 14:28:48,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 2256 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:51,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 2256 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:57,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560879500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:57,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:57,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 51, 51] total 147 [2024-11-13 14:28:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614252686] [2024-11-13 14:28:57,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:57,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2024-11-13 14:28:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2024-11-13 14:28:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3628, Invalid=17834, Unknown=0, NotChecked=0, Total=21462 [2024-11-13 14:28:57,507 INFO L87 Difference]: Start difference. First operand 295 states and 298 transitions. Second operand has 147 states, 147 states have (on average 3.9863945578231292) internal successors, (586), 147 states have internal predecessors, (586), 0 states have call successors, (0), 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 14:29:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:06,995 INFO L93 Difference]: Finished difference Result 641 states and 742 transitions. [2024-11-13 14:29:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2024-11-13 14:29:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 3.9863945578231292) internal successors, (586), 147 states have internal predecessors, (586), 0 states have call successors, (0), 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 294 [2024-11-13 14:29:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:06,997 INFO L225 Difference]: With dead ends: 641 [2024-11-13 14:29:06,997 INFO L226 Difference]: Without dead ends: 446 [2024-11-13 14:29:07,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 491 SyntacticMatches, 96 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62226 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=22770, Invalid=125070, Unknown=0, NotChecked=0, Total=147840 [2024-11-13 14:29:07,006 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 863 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:07,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 927 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 3410 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:29:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-13 14:29:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 301. [2024-11-13 14:29:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0133333333333334) internal successors, (304), 300 states have internal predecessors, (304), 0 states have call successors, (0), 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 14:29:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 304 transitions. [2024-11-13 14:29:07,049 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 304 transitions. Word has length 294 [2024-11-13 14:29:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:07,050 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 304 transitions. [2024-11-13 14:29:07,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 3.9863945578231292) internal successors, (586), 147 states have internal predecessors, (586), 0 states have call successors, (0), 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 14:29:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 304 transitions. [2024-11-13 14:29:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-13 14:29:07,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:07,052 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:07,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-13 14:29:07,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-13 14:29:07,253 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:07,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash -41937673, now seen corresponding path program 57 times [2024-11-13 14:29:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866898383] [2024-11-13 14:29:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4467 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:13,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866898383] [2024-11-13 14:29:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866898383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050165182] [2024-11-13 14:29:13,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:29:13,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:13,010 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:13,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-13 14:29:13,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2024-11-13 14:29:13,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:13,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 14:29:13,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:18,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050165182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:22,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 151 [2024-11-13 14:29:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453228164] [2024-11-13 14:29:22,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:22,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-11-13 14:29:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-11-13 14:29:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5103, Invalid=17547, Unknown=0, NotChecked=0, Total=22650 [2024-11-13 14:29:22,248 INFO L87 Difference]: Start difference. First operand 301 states and 304 transitions. Second operand has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 0 states have call successors, (0), 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 14:29:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:25,433 INFO L93 Difference]: Finished difference Result 649 states and 751 transitions. [2024-11-13 14:29:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-13 14:29:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 0 states have call successors, (0), 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 300 [2024-11-13 14:29:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:25,435 INFO L225 Difference]: With dead ends: 649 [2024-11-13 14:29:25,435 INFO L226 Difference]: Without dead ends: 450 [2024-11-13 14:29:25,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 453 SyntacticMatches, 96 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14872 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=10005, Invalid=29795, Unknown=0, NotChecked=0, Total=39800 [2024-11-13 14:29:25,437 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 509 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:25,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1271 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:29:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-13 14:29:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 303. [2024-11-13 14:29:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0132450331125828) internal successors, (306), 302 states have internal predecessors, (306), 0 states have call successors, (0), 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 14:29:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 306 transitions. [2024-11-13 14:29:25,460 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 306 transitions. Word has length 300 [2024-11-13 14:29:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:25,460 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 306 transitions. [2024-11-13 14:29:25,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 0 states have call successors, (0), 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 14:29:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 306 transitions. [2024-11-13 14:29:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-13 14:29:25,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:25,462 INFO L215 NwaCegarLoop]: trace histogram [50, 49, 49, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:25,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-13 14:29:25,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-13 14:29:25,663 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:25,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1507615196, now seen corresponding path program 58 times [2024-11-13 14:29:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872489793] [2024-11-13 14:29:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2352 proven. 4706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:28,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872489793] [2024-11-13 14:29:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872489793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796952491] [2024-11-13 14:29:28,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:29:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:28,731 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:28,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-13 14:29:29,252 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:29:29,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:29,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-13 14:29:29,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:29,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796952491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:32,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:32,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-11-13 14:29:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817602464] [2024-11-13 14:29:32,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:32,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 14:29:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 14:29:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1387, Invalid=1693, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:29:32,160 INFO L87 Difference]: Start difference. First operand 303 states and 306 transitions. Second operand has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 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 14:29:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:33,385 INFO L93 Difference]: Finished difference Result 320 states and 324 transitions. [2024-11-13 14:29:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-13 14:29:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 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 302 [2024-11-13 14:29:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:33,386 INFO L225 Difference]: With dead ends: 320 [2024-11-13 14:29:33,386 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 14:29:33,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 551 SyntacticMatches, 98 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4137, Invalid=6993, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 14:29:33,387 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:33,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 415 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:29:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 14:29:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 311. [2024-11-13 14:29:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0129032258064516) internal successors, (314), 310 states have internal predecessors, (314), 0 states have call successors, (0), 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 14:29:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 314 transitions. [2024-11-13 14:29:33,425 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 314 transitions. Word has length 302 [2024-11-13 14:29:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:33,425 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 314 transitions. [2024-11-13 14:29:33,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 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 14:29:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 314 transitions. [2024-11-13 14:29:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-13 14:29:33,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:33,428 INFO L215 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:33,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-13 14:29:33,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:33,628 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:33,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash -454646206, now seen corresponding path program 59 times [2024-11-13 14:29:33,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767902148] [2024-11-13 14:29:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 4853 proven. 2597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767902148] [2024-11-13 14:29:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767902148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023403354] [2024-11-13 14:29:39,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:29:39,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:39,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:39,220 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:39,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-13 14:29:39,976 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2024-11-13 14:29:39,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:39,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-13 14:29:39,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:44,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023403354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:48,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 158 [2024-11-13 14:29:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606789137] [2024-11-13 14:29:48,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:48,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-11-13 14:29:48,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-11-13 14:29:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5620, Invalid=19186, Unknown=0, NotChecked=0, Total=24806 [2024-11-13 14:29:48,853 INFO L87 Difference]: Start difference. First operand 311 states and 314 transitions. Second operand has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 0 states have call successors, (0), 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 14:29:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:54,790 INFO L93 Difference]: Finished difference Result 874 states and 981 transitions. [2024-11-13 14:29:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-11-13 14:29:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 0 states have call successors, (0), 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 310 [2024-11-13 14:29:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:54,792 INFO L225 Difference]: With dead ends: 874 [2024-11-13 14:29:54,792 INFO L226 Difference]: Without dead ends: 468 [2024-11-13 14:29:54,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 468 SyntacticMatches, 97 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22455 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=16176, Invalid=50646, Unknown=0, NotChecked=0, Total=66822 [2024-11-13 14:29:54,797 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 701 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:54,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1518 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:29:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-13 14:29:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 315. [2024-11-13 14:29:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0127388535031847) internal successors, (318), 314 states have internal predecessors, (318), 0 states have call successors, (0), 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 14:29:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 318 transitions. [2024-11-13 14:29:54,836 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 318 transitions. Word has length 310 [2024-11-13 14:29:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:54,836 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 318 transitions. [2024-11-13 14:29:54,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 0 states have call successors, (0), 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 14:29:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 318 transitions. [2024-11-13 14:29:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-13 14:29:54,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:54,838 INFO L215 NwaCegarLoop]: trace histogram [52, 51, 51, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:54,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-13 14:29:55,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:55,039 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:55,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2023295412, now seen corresponding path program 60 times [2024-11-13 14:29:55,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:55,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861824002] [2024-11-13 14:29:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:55,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2550 proven. 5102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:58,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:58,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861824002] [2024-11-13 14:29:58,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861824002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:58,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686244556] [2024-11-13 14:29:58,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:29:58,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:58,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:58,625 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:58,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-13 14:29:59,330 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-13 14:29:59,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:59,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-13 14:29:59,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:59,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686244556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:02,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2024-11-13 14:30:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984556670] [2024-11-13 14:30:02,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:02,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 14:30:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 14:30:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1494, Invalid=1812, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 14:30:02,363 INFO L87 Difference]: Start difference. First operand 315 states and 318 transitions. Second operand has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 0 states have call successors, (0), 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 14:30:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:03,614 INFO L93 Difference]: Finished difference Result 332 states and 336 transitions. [2024-11-13 14:30:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-13 14:30:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 0 states have call successors, (0), 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 314 [2024-11-13 14:30:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:03,615 INFO L225 Difference]: With dead ends: 332 [2024-11-13 14:30:03,615 INFO L226 Difference]: Without dead ends: 330 [2024-11-13 14:30:03,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 573 SyntacticMatches, 102 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5903 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4458, Invalid=7532, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 14:30:03,617 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 11 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:03,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 476 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:30:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-13 14:30:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 323. [2024-11-13 14:30:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 322 states have internal predecessors, (326), 0 states have call successors, (0), 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 14:30:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 326 transitions. [2024-11-13 14:30:03,647 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 326 transitions. Word has length 314 [2024-11-13 14:30:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:03,647 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 326 transitions. [2024-11-13 14:30:03,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 0 states have call successors, (0), 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 14:30:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 326 transitions. [2024-11-13 14:30:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-13 14:30:03,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:03,648 INFO L215 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:03,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-13 14:30:03,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-13 14:30:03,849 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:03,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1452133042, now seen corresponding path program 61 times [2024-11-13 14:30:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:03,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010124775] [2024-11-13 14:30:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:03,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5255 proven. 2805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010124775] [2024-11-13 14:30:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010124775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336730074] [2024-11-13 14:30:09,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:30:09,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:09,970 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-13 14:30:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:10,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-13 14:30:10,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5406 proven. 2652 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:30:15,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5406 proven. 2652 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:30:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336730074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:19,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106, 106] total 161 [2024-11-13 14:30:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604663571] [2024-11-13 14:30:19,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:19,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-13 14:30:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-13 14:30:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5781, Invalid=19979, Unknown=0, NotChecked=0, Total=25760 [2024-11-13 14:30:19,990 INFO L87 Difference]: Start difference. First operand 323 states and 326 transitions. Second operand has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 0 states have call successors, (0), 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 14:30:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:23,533 INFO L93 Difference]: Finished difference Result 694 states and 802 transitions. [2024-11-13 14:30:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-13 14:30:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 0 states have call successors, (0), 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 322 [2024-11-13 14:30:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:23,535 INFO L225 Difference]: With dead ends: 694 [2024-11-13 14:30:23,535 INFO L226 Difference]: Without dead ends: 481 [2024-11-13 14:30:23,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 488 SyntacticMatches, 102 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16927 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=11295, Invalid=33861, Unknown=0, NotChecked=0, Total=45156 [2024-11-13 14:30:23,539 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 487 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:23,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1355 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:30:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-13 14:30:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 325. [2024-11-13 14:30:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.0123456790123457) internal successors, (328), 324 states have internal predecessors, (328), 0 states have call successors, (0), 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 14:30:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 328 transitions. [2024-11-13 14:30:23,574 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 328 transitions. Word has length 322 [2024-11-13 14:30:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:23,574 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 328 transitions. [2024-11-13 14:30:23,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 0 states have call successors, (0), 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 14:30:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 328 transitions. [2024-11-13 14:30:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-13 14:30:23,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:23,577 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:23,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-13 14:30:23,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-13 14:30:23,777 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:23,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash -574149161, now seen corresponding path program 62 times [2024-11-13 14:30:23,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:23,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728488855] [2024-11-13 14:30:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5255 proven. 2909 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:29,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:29,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728488855] [2024-11-13 14:30:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728488855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:29,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262261211] [2024-11-13 14:30:29,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:30:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:29,853 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:29,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-13 14:30:30,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:30:30,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:30:30,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 14:30:30,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 2756 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:34,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 2756 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262261211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:42,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 56, 56] total 162 [2024-11-13 14:30:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947026643] [2024-11-13 14:30:42,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:42,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2024-11-13 14:30:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2024-11-13 14:30:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4403, Invalid=21679, Unknown=0, NotChecked=0, Total=26082 [2024-11-13 14:30:42,773 INFO L87 Difference]: Start difference. First operand 325 states and 328 transitions. Second operand has 162 states, 162 states have (on average 3.9876543209876543) internal successors, (646), 162 states have internal predecessors, (646), 0 states have call successors, (0), 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 14:30:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:53,749 INFO L93 Difference]: Finished difference Result 706 states and 817 transitions. [2024-11-13 14:30:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2024-11-13 14:30:53,750 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 3.9876543209876543) internal successors, (646), 162 states have internal predecessors, (646), 0 states have call successors, (0), 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 324 [2024-11-13 14:30:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:53,752 INFO L225 Difference]: With dead ends: 706 [2024-11-13 14:30:53,752 INFO L226 Difference]: Without dead ends: 491 [2024-11-13 14:30:53,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 541 SyntacticMatches, 106 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76126 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=27660, Invalid=152540, Unknown=0, NotChecked=0, Total=180200 [2024-11-13 14:30:53,759 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 965 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 4379 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 4725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 4379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:53,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1083 Invalid, 4725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 4379 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:30:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-13 14:30:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 331. [2024-11-13 14:30:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.0121212121212122) internal successors, (334), 330 states have internal predecessors, (334), 0 states have call successors, (0), 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 14:30:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 334 transitions. [2024-11-13 14:30:53,790 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 334 transitions. Word has length 324 [2024-11-13 14:30:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:53,790 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 334 transitions. [2024-11-13 14:30:53,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 3.9876543209876543) internal successors, (646), 162 states have internal predecessors, (646), 0 states have call successors, (0), 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 14:30:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 334 transitions. [2024-11-13 14:30:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-13 14:30:53,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:53,792 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:53,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-13 14:30:53,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:53,993 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:53,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:53,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1474291375, now seen corresponding path program 63 times [2024-11-13 14:30:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:53,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064162462] [2024-11-13 14:30:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:53,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5462 proven. 3018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:01,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064162462] [2024-11-13 14:31:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064162462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314760760] [2024-11-13 14:31:01,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:31:01,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:01,060 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:01,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-13 14:31:01,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2024-11-13 14:31:01,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:01,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 14:31:01,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5618 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:07,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5618 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314760760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:11,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:11,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 166 [2024-11-13 14:31:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122794952] [2024-11-13 14:31:11,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:11,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2024-11-13 14:31:11,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2024-11-13 14:31:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6163, Invalid=21227, Unknown=0, NotChecked=0, Total=27390 [2024-11-13 14:31:11,366 INFO L87 Difference]: Start difference. First operand 331 states and 334 transitions. Second operand has 166 states, 166 states have (on average 3.3132530120481927) internal successors, (550), 166 states have internal predecessors, (550), 0 states have call successors, (0), 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 14:31:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:14,845 INFO L93 Difference]: Finished difference Result 714 states and 826 transitions. [2024-11-13 14:31:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-13 14:31:14,845 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.3132530120481927) internal successors, (550), 166 states have internal predecessors, (550), 0 states have call successors, (0), 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 330 [2024-11-13 14:31:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:14,847 INFO L225 Difference]: With dead ends: 714 [2024-11-13 14:31:14,847 INFO L226 Difference]: Without dead ends: 495 [2024-11-13 14:31:14,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 498 SyntacticMatches, 106 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18012 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=12105, Invalid=36075, Unknown=0, NotChecked=0, Total=48180 [2024-11-13 14:31:14,850 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 502 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:14,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1294 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:31:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-13 14:31:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 333. [2024-11-13 14:31:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.0120481927710843) internal successors, (336), 332 states have internal predecessors, (336), 0 states have call successors, (0), 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 14:31:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 336 transitions. [2024-11-13 14:31:14,893 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 336 transitions. Word has length 330 [2024-11-13 14:31:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:14,894 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 336 transitions. [2024-11-13 14:31:14,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.3132530120481927) internal successors, (550), 166 states have internal predecessors, (550), 0 states have call successors, (0), 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 14:31:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 336 transitions. [2024-11-13 14:31:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-13 14:31:14,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:14,896 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 54, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:14,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-13 14:31:15,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:15,096 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:15,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2062177492, now seen corresponding path program 64 times [2024-11-13 14:31:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375324733] [2024-11-13 14:31:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2862 proven. 5726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375324733] [2024-11-13 14:31:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375324733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213044634] [2024-11-13 14:31:18,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:31:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:18,521 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:18,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-13 14:31:19,101 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:31:19,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:19,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-13 14:31:19,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2970 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:19,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2970 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:22,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213044634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:22,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:22,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 61 [2024-11-13 14:31:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497975221] [2024-11-13 14:31:22,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:22,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 14:31:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 14:31:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1662, Invalid=1998, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 14:31:22,351 INFO L87 Difference]: Start difference. First operand 333 states and 336 transitions. Second operand has 61 states, 61 states have (on average 5.819672131147541) internal successors, (355), 61 states have internal predecessors, (355), 0 states have call successors, (0), 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 14:31:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:23,719 INFO L93 Difference]: Finished difference Result 350 states and 354 transitions. [2024-11-13 14:31:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-13 14:31:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.819672131147541) internal successors, (355), 61 states have internal predecessors, (355), 0 states have call successors, (0), 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 332 [2024-11-13 14:31:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:23,720 INFO L225 Difference]: With dead ends: 350 [2024-11-13 14:31:23,721 INFO L226 Difference]: Without dead ends: 348 [2024-11-13 14:31:23,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 606 SyntacticMatches, 108 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4962, Invalid=8378, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 14:31:23,722 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 11 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:23,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 603 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:31:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-13 14:31:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 341. [2024-11-13 14:31:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.011764705882353) internal successors, (344), 340 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 344 transitions. [2024-11-13 14:31:23,766 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 344 transitions. Word has length 332 [2024-11-13 14:31:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:23,766 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 344 transitions. [2024-11-13 14:31:23,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.819672131147541) internal successors, (355), 61 states have internal predecessors, (355), 0 states have call successors, (0), 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 14:31:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 344 transitions. [2024-11-13 14:31:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-13 14:31:23,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:23,767 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:23,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-13 14:31:23,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:23,968 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:23,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash -64085702, now seen corresponding path program 65 times [2024-11-13 14:31:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254848077] [2024-11-13 14:31:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 5888 proven. 3132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254848077] [2024-11-13 14:31:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254848077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107792261] [2024-11-13 14:31:30,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:31:30,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:30,418 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-13 14:31:31,188 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2024-11-13 14:31:31,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:31,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 14:31:31,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 6050 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:36,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 6050 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107792261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:42,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 173 [2024-11-13 14:31:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132107832] [2024-11-13 14:31:42,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:42,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-13 14:31:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-13 14:31:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6730, Invalid=23026, Unknown=0, NotChecked=0, Total=29756 [2024-11-13 14:31:42,490 INFO L87 Difference]: Start difference. First operand 341 states and 344 transitions. Second operand has 173 states, 173 states have (on average 3.3352601156069364) internal successors, (577), 173 states have internal predecessors, (577), 0 states have call successors, (0), 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 14:31:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:50,156 INFO L93 Difference]: Finished difference Result 959 states and 1076 transitions. [2024-11-13 14:31:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-13 14:31:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 3.3352601156069364) internal successors, (577), 173 states have internal predecessors, (577), 0 states have call successors, (0), 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 340 [2024-11-13 14:31:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:50,159 INFO L225 Difference]: With dead ends: 959 [2024-11-13 14:31:50,159 INFO L226 Difference]: Without dead ends: 513 [2024-11-13 14:31:50,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 513 SyntacticMatches, 107 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27040 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=19441, Invalid=60931, Unknown=0, NotChecked=0, Total=80372 [2024-11-13 14:31:50,166 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 682 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:50,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1750 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:31:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-13 14:31:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 345. [2024-11-13 14:31:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.0116279069767442) internal successors, (348), 344 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 348 transitions. [2024-11-13 14:31:50,222 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 348 transitions. Word has length 340 [2024-11-13 14:31:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:50,223 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 348 transitions. [2024-11-13 14:31:50,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 3.3352601156069364) internal successors, (577), 173 states have internal predecessors, (577), 0 states have call successors, (0), 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 14:31:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 348 transitions. [2024-11-13 14:31:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-13 14:31:50,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:50,226 INFO L215 NwaCegarLoop]: trace histogram [57, 56, 56, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:50,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-13 14:31:50,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-13 14:31:50,426 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:50,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:50,427 INFO L85 PathProgramCache]: Analyzing trace with hash -832945212, now seen corresponding path program 66 times [2024-11-13 14:31:50,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:50,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076296259] [2024-11-13 14:31:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:50,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3080 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076296259] [2024-11-13 14:31:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076296259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554518380] [2024-11-13 14:31:54,958 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:31:54,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:54,960 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:54,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-13 14:31:55,936 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2024-11-13 14:31:55,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:55,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 14:31:55,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3192 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:56,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3192 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554518380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:00,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 63 [2024-11-13 14:32:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471330587] [2024-11-13 14:32:00,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:00,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 14:32:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 14:32:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1779, Invalid=2127, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:32:00,209 INFO L87 Difference]: Start difference. First operand 345 states and 348 transitions. Second operand has 63 states, 63 states have (on average 5.825396825396825) internal successors, (367), 63 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:02,102 INFO L93 Difference]: Finished difference Result 362 states and 366 transitions. [2024-11-13 14:32:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 14:32:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.825396825396825) internal successors, (367), 63 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2024-11-13 14:32:02,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:02,104 INFO L225 Difference]: With dead ends: 362 [2024-11-13 14:32:02,104 INFO L226 Difference]: Without dead ends: 360 [2024-11-13 14:32:02,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 628 SyntacticMatches, 112 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7043 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5313, Invalid=8967, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 14:32:02,106 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 13 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:02,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 490 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:32:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-13 14:32:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 353. [2024-11-13 14:32:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0113636363636365) internal successors, (356), 352 states have internal predecessors, (356), 0 states have call successors, (0), 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 14:32:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 356 transitions. [2024-11-13 14:32:02,138 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 356 transitions. Word has length 344 [2024-11-13 14:32:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:02,138 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 356 transitions. [2024-11-13 14:32:02,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.825396825396825) internal successors, (367), 63 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 356 transitions. [2024-11-13 14:32:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-13 14:32:02,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:02,140 INFO L215 NwaCegarLoop]: trace histogram [58, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:02,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-13 14:32:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:02,341 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:02,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 267919402, now seen corresponding path program 67 times [2024-11-13 14:32:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511003252] [2024-11-13 14:32:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6330 proven. 3360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511003252] [2024-11-13 14:32:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511003252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792254820] [2024-11-13 14:32:11,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:32:11,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:11,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:11,062 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-13 14:32:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:11,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 14:32:11,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6496 proven. 3192 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:32:19,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6496 proven. 3192 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:32:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792254820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:23,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116, 116] total 176 [2024-11-13 14:32:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554363556] [2024-11-13 14:32:23,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:23,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2024-11-13 14:32:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2024-11-13 14:32:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6906, Invalid=23894, Unknown=0, NotChecked=0, Total=30800 [2024-11-13 14:32:23,821 INFO L87 Difference]: Start difference. First operand 353 states and 356 transitions. Second operand has 176 states, 176 states have (on average 3.340909090909091) internal successors, (588), 176 states have internal predecessors, (588), 0 states have call successors, (0), 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 14:32:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:28,021 INFO L93 Difference]: Finished difference Result 759 states and 877 transitions. [2024-11-13 14:32:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-13 14:32:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 3.340909090909091) internal successors, (588), 176 states have internal predecessors, (588), 0 states have call successors, (0), 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 352 [2024-11-13 14:32:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:28,024 INFO L225 Difference]: With dead ends: 759 [2024-11-13 14:32:28,025 INFO L226 Difference]: Without dead ends: 526 [2024-11-13 14:32:28,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 533 SyntacticMatches, 112 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20267 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=13520, Invalid=40536, Unknown=0, NotChecked=0, Total=54056 [2024-11-13 14:32:28,027 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 496 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:28,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1565 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:32:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-13 14:32:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 355. [2024-11-13 14:32:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0112994350282485) internal successors, (358), 354 states have internal predecessors, (358), 0 states have call successors, (0), 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 14:32:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 358 transitions. [2024-11-13 14:32:28,055 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 358 transitions. Word has length 352 [2024-11-13 14:32:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:28,055 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 358 transitions. [2024-11-13 14:32:28,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 3.340909090909091) internal successors, (588), 176 states have internal predecessors, (588), 0 states have call successors, (0), 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 14:32:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 358 transitions. [2024-11-13 14:32:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-13 14:32:28,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:28,056 INFO L215 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:28,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-13 14:32:28,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:28,257 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:28,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -125356913, now seen corresponding path program 68 times [2024-11-13 14:32:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998903398] [2024-11-13 14:32:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6330 proven. 3474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998903398] [2024-11-13 14:32:35,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998903398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897614019] [2024-11-13 14:32:35,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:35,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:35,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:35,302 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:35,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-13 14:32:35,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:35,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:35,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 14:32:35,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6498 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:42,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6498 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897614019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:47,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118, 118] total 178 [2024-11-13 14:32:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78464427] [2024-11-13 14:32:47,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:47,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2024-11-13 14:32:47,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2024-11-13 14:32:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7083, Invalid=24423, Unknown=0, NotChecked=0, Total=31506 [2024-11-13 14:32:47,113 INFO L87 Difference]: Start difference. First operand 355 states and 358 transitions. Second operand has 178 states, 178 states have (on average 3.3146067415730336) internal successors, (590), 178 states have internal predecessors, (590), 0 states have call successors, (0), 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 14:32:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:51,314 INFO L93 Difference]: Finished difference Result 766 states and 886 transitions. [2024-11-13 14:32:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 14:32:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 178 states have (on average 3.3146067415730336) internal successors, (590), 178 states have internal predecessors, (590), 0 states have call successors, (0), 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 354 [2024-11-13 14:32:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:51,316 INFO L225 Difference]: With dead ends: 766 [2024-11-13 14:32:51,316 INFO L226 Difference]: Without dead ends: 531 [2024-11-13 14:32:51,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 534 SyntacticMatches, 114 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20740 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=13929, Invalid=41531, Unknown=0, NotChecked=0, Total=55460 [2024-11-13 14:32:51,319 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 733 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:51,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1322 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:32:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-13 14:32:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 357. [2024-11-13 14:32:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.0112359550561798) internal successors, (360), 356 states have internal predecessors, (360), 0 states have call successors, (0), 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 14:32:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 360 transitions. [2024-11-13 14:32:51,349 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 360 transitions. Word has length 354 [2024-11-13 14:32:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:51,349 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 360 transitions. [2024-11-13 14:32:51,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 178 states have (on average 3.3146067415730336) internal successors, (590), 178 states have internal predecessors, (590), 0 states have call successors, (0), 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 14:32:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 360 transitions. [2024-11-13 14:32:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-13 14:32:51,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:51,351 INFO L215 NwaCegarLoop]: trace histogram [59, 58, 58, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:51,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-13 14:32:51,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2024-11-13 14:32:51,552 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:51,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -106773580, now seen corresponding path program 69 times [2024-11-13 14:32:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182495991] [2024-11-13 14:32:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3306 proven. 6614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182495991] [2024-11-13 14:32:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182495991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351415045] [2024-11-13 14:32:55,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:32:55,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:55,629 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:55,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-13 14:32:56,557 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2024-11-13 14:32:56,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:56,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-13 14:32:56,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3422 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:57,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3422 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351415045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:00,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:00,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 65 [2024-11-13 14:33:00,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857721954] [2024-11-13 14:33:00,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:00,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 14:33:00,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 14:33:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1900, Invalid=2260, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 14:33:00,925 INFO L87 Difference]: Start difference. First operand 357 states and 360 transitions. Second operand has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 0 states have call successors, (0), 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 14:33:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:02,872 INFO L93 Difference]: Finished difference Result 374 states and 378 transitions. [2024-11-13 14:33:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-13 14:33:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 0 states have call successors, (0), 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 356 [2024-11-13 14:33:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:02,874 INFO L225 Difference]: With dead ends: 374 [2024-11-13 14:33:02,874 INFO L226 Difference]: Without dead ends: 372 [2024-11-13 14:33:02,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 650 SyntacticMatches, 116 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7527 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5676, Invalid=9576, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 14:33:02,876 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 11 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:02,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 657 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:33:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-13 14:33:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 365. [2024-11-13 14:33:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.010989010989011) internal successors, (368), 364 states have internal predecessors, (368), 0 states have call successors, (0), 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 14:33:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 368 transitions. [2024-11-13 14:33:02,912 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 368 transitions. Word has length 356 [2024-11-13 14:33:02,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:02,912 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 368 transitions. [2024-11-13 14:33:02,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 0 states have call successors, (0), 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 14:33:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 368 transitions. [2024-11-13 14:33:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-13 14:33:02,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:02,915 INFO L215 NwaCegarLoop]: trace histogram [60, 59, 59, 59, 59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:02,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-13 14:33:03,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:03,116 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:33:03,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1719250970, now seen corresponding path program 70 times [2024-11-13 14:33:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977637584] [2024-11-13 14:33:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6788 proven. 3596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977637584] [2024-11-13 14:33:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977637584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847836106] [2024-11-13 14:33:11,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:33:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:11,442 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-13 14:33:12,210 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:33:12,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:12,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-13 14:33:12,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6962 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:19,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6962 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847836106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:25,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:25,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121, 121] total 185 [2024-11-13 14:33:25,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108995129] [2024-11-13 14:33:25,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:25,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2024-11-13 14:33:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2024-11-13 14:33:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7690, Invalid=26350, Unknown=0, NotChecked=0, Total=34040 [2024-11-13 14:33:25,525 INFO L87 Difference]: Start difference. First operand 365 states and 368 transitions. Second operand has 185 states, 185 states have (on average 3.3351351351351353) internal successors, (617), 185 states have internal predecessors, (617), 0 states have call successors, (0), 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 14:33:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:34,319 INFO L93 Difference]: Finished difference Result 1027 states and 1152 transitions. [2024-11-13 14:33:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2024-11-13 14:33:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.3351351351351353) internal successors, (617), 185 states have internal predecessors, (617), 0 states have call successors, (0), 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 364 [2024-11-13 14:33:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:34,321 INFO L225 Difference]: With dead ends: 1027 [2024-11-13 14:33:34,321 INFO L226 Difference]: Without dead ends: 549 [2024-11-13 14:33:34,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 549 SyntacticMatches, 115 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31014 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=22269, Invalid=69843, Unknown=0, NotChecked=0, Total=92112 [2024-11-13 14:33:34,327 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 749 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:34,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1756 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:33:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-13 14:33:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 369. [2024-11-13 14:33:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.0108695652173914) internal successors, (372), 368 states have internal predecessors, (372), 0 states have call successors, (0), 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 14:33:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 372 transitions. [2024-11-13 14:33:34,362 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 372 transitions. Word has length 364 [2024-11-13 14:33:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:34,362 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 372 transitions. [2024-11-13 14:33:34,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.3351351351351353) internal successors, (617), 185 states have internal predecessors, (617), 0 states have call successors, (0), 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 14:33:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 372 transitions. [2024-11-13 14:33:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-13 14:33:34,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:34,364 INFO L215 NwaCegarLoop]: trace histogram [61, 60, 60, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:34,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-13 14:33:34,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-13 14:33:34,564 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:33:34,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 552162468, now seen corresponding path program 71 times [2024-11-13 14:33:34,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:34,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755335465] [2024-11-13 14:33:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:34,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3540 proven. 7082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:39,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:39,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755335465] [2024-11-13 14:33:39,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755335465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:39,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175559340] [2024-11-13 14:33:39,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:33:39,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:39,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:39,694 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:39,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-13 14:33:40,704 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-13 14:33:40,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:40,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-13 14:33:40,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3660 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:41,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3660 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175559340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:45,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:45,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 67 [2024-11-13 14:33:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554312676] [2024-11-13 14:33:45,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:45,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 14:33:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 14:33:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2025, Invalid=2397, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 14:33:45,108 INFO L87 Difference]: Start difference. First operand 369 states and 372 transitions. Second operand has 67 states, 67 states have (on average 5.835820895522388) internal successors, (391), 67 states have internal predecessors, (391), 0 states have call successors, (0), 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 14:33:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:46,988 INFO L93 Difference]: Finished difference Result 386 states and 390 transitions. [2024-11-13 14:33:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 14:33:46,989 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.835820895522388) internal successors, (391), 67 states have internal predecessors, (391), 0 states have call successors, (0), 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 368 [2024-11-13 14:33:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:46,991 INFO L225 Difference]: With dead ends: 386 [2024-11-13 14:33:46,991 INFO L226 Difference]: Without dead ends: 384 [2024-11-13 14:33:46,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 672 SyntacticMatches, 120 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8027 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=6051, Invalid=10205, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 14:33:46,992 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 9 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:46,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 731 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:33:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-13 14:33:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 377. [2024-11-13 14:33:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.0106382978723405) internal successors, (380), 376 states have internal predecessors, (380), 0 states have call successors, (0), 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 14:33:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 380 transitions. [2024-11-13 14:33:47,028 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 380 transitions. Word has length 368 [2024-11-13 14:33:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:47,028 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 380 transitions. [2024-11-13 14:33:47,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.835820895522388) internal successors, (391), 67 states have internal predecessors, (391), 0 states have call successors, (0), 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 14:33:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 380 transitions. [2024-11-13 14:33:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-13 14:33:47,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:47,030 INFO L215 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:47,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-13 14:33:47,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:47,230 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:33:47,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1717063946, now seen corresponding path program 72 times [2024-11-13 14:33:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285800392] [2024-11-13 14:33:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7262 proven. 3840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:55,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285800392] [2024-11-13 14:33:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285800392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546102128] [2024-11-13 14:33:55,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:33:55,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:55,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:55,387 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:55,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-13 14:33:56,258 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-11-13 14:33:56,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:56,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-13 14:33:56,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:34:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7442 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:03,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7442 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546102128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:34:08,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:34:08,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125, 125] total 191 [2024-11-13 14:34:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029964413] [2024-11-13 14:34:08,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:08,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2024-11-13 14:34:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2024-11-13 14:34:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8194, Invalid=28096, Unknown=0, NotChecked=0, Total=36290 [2024-11-13 14:34:08,261 INFO L87 Difference]: Start difference. First operand 377 states and 380 transitions. Second operand has 191 states, 191 states have (on average 3.3350785340314135) internal successors, (637), 191 states have internal predecessors, (637), 0 states have call successors, (0), 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 14:34:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:34:15,749 INFO L93 Difference]: Finished difference Result 1061 states and 1190 transitions. [2024-11-13 14:34:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-11-13 14:34:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 3.3350785340314135) internal successors, (637), 191 states have internal predecessors, (637), 0 states have call successors, (0), 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 376 [2024-11-13 14:34:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:34:15,751 INFO L225 Difference]: With dead ends: 1061 [2024-11-13 14:34:15,751 INFO L226 Difference]: Without dead ends: 567 [2024-11-13 14:34:15,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 567 SyntacticMatches, 119 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33103 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=23755, Invalid=74527, Unknown=0, NotChecked=0, Total=98282 [2024-11-13 14:34:15,757 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 934 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:34:15,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1895 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:34:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-13 14:34:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 381. [2024-11-13 14:34:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.0105263157894737) internal successors, (384), 380 states have internal predecessors, (384), 0 states have call successors, (0), 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 14:34:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 384 transitions. [2024-11-13 14:34:15,810 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 384 transitions. Word has length 376 [2024-11-13 14:34:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:34:15,810 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 384 transitions. [2024-11-13 14:34:15,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 3.3350785340314135) internal successors, (637), 191 states have internal predecessors, (637), 0 states have call successors, (0), 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 14:34:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 384 transitions. [2024-11-13 14:34:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-13 14:34:15,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:34:15,812 INFO L215 NwaCegarLoop]: trace histogram [63, 62, 62, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:15,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-13 14:34:16,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:16,013 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:34:16,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1964209812, now seen corresponding path program 73 times [2024-11-13 14:34:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:16,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122244754] [2024-11-13 14:34:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:16,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3782 proven. 7566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122244754] [2024-11-13 14:34:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122244754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:34:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982227720] [2024-11-13 14:34:20,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:34:20,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:34:20,761 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:34:20,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-13 14:34:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:21,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 14:34:21,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:34:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3906 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:21,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3906 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:25,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982227720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:34:25,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:34:25,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 69 [2024-11-13 14:34:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330682587] [2024-11-13 14:34:25,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:25,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 14:34:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 14:34:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2154, Invalid=2538, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 14:34:25,845 INFO L87 Difference]: Start difference. First operand 381 states and 384 transitions. Second operand has 69 states, 69 states have (on average 5.840579710144928) internal successors, (403), 69 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:34:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:34:27,861 INFO L93 Difference]: Finished difference Result 398 states and 402 transitions. [2024-11-13 14:34:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-13 14:34:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.840579710144928) internal successors, (403), 69 states have internal predecessors, (403), 0 states have call successors, (0), 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 380 [2024-11-13 14:34:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:34:27,863 INFO L225 Difference]: With dead ends: 398 [2024-11-13 14:34:27,863 INFO L226 Difference]: Without dead ends: 396 [2024-11-13 14:34:27,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 694 SyntacticMatches, 124 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6438, Invalid=10854, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 14:34:27,865 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 11 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:34:27,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 622 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:34:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-13 14:34:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 389. [2024-11-13 14:34:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.0103092783505154) internal successors, (392), 388 states have internal predecessors, (392), 0 states have call successors, (0), 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 14:34:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 392 transitions. [2024-11-13 14:34:27,900 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 392 transitions. Word has length 380 [2024-11-13 14:34:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:34:27,900 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 392 transitions. [2024-11-13 14:34:27,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.840579710144928) internal successors, (403), 69 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:34:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 392 transitions. [2024-11-13 14:34:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-13 14:34:27,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:34:27,901 INFO L215 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:27,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-13 14:34:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:28,102 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:34:28,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:28,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1023835398, now seen corresponding path program 74 times [2024-11-13 14:34:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:28,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986547150] [2024-11-13 14:34:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:28,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7752 proven. 4092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:38,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986547150] [2024-11-13 14:34:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986547150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:34:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83985424] [2024-11-13 14:34:38,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:34:38,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:38,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:34:38,142 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:34:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-13 14:34:38,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:34:38,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:34:38,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-13 14:34:38,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:34:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7936 proven. 3906 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:34:47,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7936 proven. 3906 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:34:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83985424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:34:54,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:34:54,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 128, 128] total 194 [2024-11-13 14:34:54,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195792846] [2024-11-13 14:34:54,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:54,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2024-11-13 14:34:54,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2024-11-13 14:34:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8388, Invalid=29054, Unknown=0, NotChecked=0, Total=37442 [2024-11-13 14:34:54,540 INFO L87 Difference]: Start difference. First operand 389 states and 392 transitions. Second operand has 194 states, 194 states have (on average 3.3402061855670104) internal successors, (648), 194 states have internal predecessors, (648), 0 states have call successors, (0), 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 14:34:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:34:59,666 INFO L93 Difference]: Finished difference Result 837 states and 967 transitions. [2024-11-13 14:34:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-13 14:34:59,667 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.3402061855670104) internal successors, (648), 194 states have internal predecessors, (648), 0 states have call successors, (0), 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 388 [2024-11-13 14:34:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:34:59,669 INFO L225 Difference]: With dead ends: 837 [2024-11-13 14:34:59,669 INFO L226 Difference]: Without dead ends: 580 [2024-11-13 14:34:59,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 587 SyntacticMatches, 124 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24671 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=16454, Invalid=49338, Unknown=0, NotChecked=0, Total=65792 [2024-11-13 14:34:59,672 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 583 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:34:59,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1659 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:34:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-13 14:34:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 391. [2024-11-13 14:34:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.0102564102564102) internal successors, (394), 390 states have internal predecessors, (394), 0 states have call successors, (0), 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 14:34:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 394 transitions. [2024-11-13 14:34:59,706 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 394 transitions. Word has length 388 [2024-11-13 14:34:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:34:59,706 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 394 transitions. [2024-11-13 14:34:59,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.3402061855670104) internal successors, (648), 194 states have internal predecessors, (648), 0 states have call successors, (0), 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 14:34:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 394 transitions. [2024-11-13 14:34:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-13 14:34:59,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:34:59,708 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:59,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-13 14:34:59,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-11-13 14:34:59,909 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:34:59,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:59,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1379596065, now seen corresponding path program 75 times [2024-11-13 14:34:59,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:59,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324592744] [2024-11-13 14:34:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:59,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:35:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7752 proven. 4218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:10,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:35:10,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324592744] [2024-11-13 14:35:10,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324592744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:10,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706674347] [2024-11-13 14:35:10,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:35:10,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:10,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:35:10,095 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:35:10,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-13 14:35:11,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2024-11-13 14:35:11,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:35:11,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-13 14:35:11,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:35:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7938 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:19,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:35:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7938 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706674347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:35:26,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:35:26,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 196 [2024-11-13 14:35:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995403627] [2024-11-13 14:35:26,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:35:26,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-11-13 14:35:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:35:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-11-13 14:35:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8583, Invalid=29637, Unknown=0, NotChecked=0, Total=38220 [2024-11-13 14:35:26,678 INFO L87 Difference]: Start difference. First operand 391 states and 394 transitions. Second operand has 196 states, 196 states have (on average 3.316326530612245) internal successors, (650), 196 states have internal predecessors, (650), 0 states have call successors, (0), 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 14:35:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:35:32,306 INFO L93 Difference]: Finished difference Result 844 states and 976 transitions. [2024-11-13 14:35:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-13 14:35:32,307 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 3.316326530612245) internal successors, (650), 196 states have internal predecessors, (650), 0 states have call successors, (0), 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 390 [2024-11-13 14:35:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:35:32,308 INFO L225 Difference]: With dead ends: 844 [2024-11-13 14:35:32,309 INFO L226 Difference]: Without dead ends: 585 [2024-11-13 14:35:32,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 588 SyntacticMatches, 126 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25192 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=16905, Invalid=50435, Unknown=0, NotChecked=0, Total=67340 [2024-11-13 14:35:32,312 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 731 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:35:32,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1678 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:35:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-13 14:35:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 393. [2024-11-13 14:35:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.010204081632653) internal successors, (396), 392 states have internal predecessors, (396), 0 states have call successors, (0), 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 14:35:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 396 transitions. [2024-11-13 14:35:32,344 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 396 transitions. Word has length 390 [2024-11-13 14:35:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:35:32,344 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 396 transitions. [2024-11-13 14:35:32,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 3.316326530612245) internal successors, (650), 196 states have internal predecessors, (650), 0 states have call successors, (0), 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 14:35:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 396 transitions. [2024-11-13 14:35:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-13 14:35:32,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:35:32,345 INFO L215 NwaCegarLoop]: trace histogram [65, 64, 64, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:35:32,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-13 14:35:32,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-11-13 14:35:32,546 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:35:32,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:35:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 331786628, now seen corresponding path program 76 times [2024-11-13 14:35:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:35:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741241077] [2024-11-13 14:35:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:35:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:35:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4032 proven. 8066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:35:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741241077] [2024-11-13 14:35:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741241077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808593248] [2024-11-13 14:35:37,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:35:37,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:35:37,499 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:35:37,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-13 14:35:38,257 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:35:38,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:35:38,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-13 14:35:38,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:35:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4160 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:38,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:35:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4160 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808593248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:35:42,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:35:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 71 [2024-11-13 14:35:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67948490] [2024-11-13 14:35:42,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:35:42,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 14:35:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:35:42,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 14:35:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2287, Invalid=2683, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 14:35:42,462 INFO L87 Difference]: Start difference. First operand 393 states and 396 transitions. Second operand has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 0 states have call successors, (0), 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 14:35:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:35:44,187 INFO L93 Difference]: Finished difference Result 410 states and 414 transitions. [2024-11-13 14:35:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-13 14:35:44,188 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 0 states have call successors, (0), 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 392 [2024-11-13 14:35:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:35:44,189 INFO L225 Difference]: With dead ends: 410 [2024-11-13 14:35:44,189 INFO L226 Difference]: Without dead ends: 408 [2024-11-13 14:35:44,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 716 SyntacticMatches, 128 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9075 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6837, Invalid=11523, Unknown=0, NotChecked=0, Total=18360 [2024-11-13 14:35:44,191 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 9 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:35:44,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 608 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:35:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-13 14:35:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 401. [2024-11-13 14:35:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.01) internal successors, (404), 400 states have internal predecessors, (404), 0 states have call successors, (0), 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 14:35:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 404 transitions. [2024-11-13 14:35:44,224 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 404 transitions. Word has length 392 [2024-11-13 14:35:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:35:44,224 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 404 transitions. [2024-11-13 14:35:44,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 0 states have call successors, (0), 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 14:35:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 404 transitions. [2024-11-13 14:35:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-13 14:35:44,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:35:44,225 INFO L215 NwaCegarLoop]: trace histogram [66, 65, 65, 65, 65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:35:44,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-13 14:35:44,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-13 14:35:44,426 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:35:44,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:35:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1552074218, now seen corresponding path program 77 times [2024-11-13 14:35:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:35:44,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425495853] [2024-11-13 14:35:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:35:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:35:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8258 proven. 4352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:53,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:35:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425495853] [2024-11-13 14:35:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425495853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859784854] [2024-11-13 14:35:53,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:35:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:35:53,299 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:35:53,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-13 14:35:54,277 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2024-11-13 14:35:54,277 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:35:54,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-13 14:35:54,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:36:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8450 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:02,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:36:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8450 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:09,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859784854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:36:09,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:36:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133, 133] total 203 [2024-11-13 14:36:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052845492] [2024-11-13 14:36:09,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:36:09,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-13 14:36:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:36:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-13 14:36:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9250, Invalid=31756, Unknown=0, NotChecked=0, Total=41006 [2024-11-13 14:36:09,282 INFO L87 Difference]: Start difference. First operand 401 states and 404 transitions. Second operand has 203 states, 203 states have (on average 3.334975369458128) internal successors, (677), 203 states have internal predecessors, (677), 0 states have call successors, (0), 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 14:36:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:36:20,532 INFO L93 Difference]: Finished difference Result 1129 states and 1266 transitions. [2024-11-13 14:36:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-11-13 14:36:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 3.334975369458128) internal successors, (677), 203 states have internal predecessors, (677), 0 states have call successors, (0), 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 400 [2024-11-13 14:36:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:36:20,534 INFO L225 Difference]: With dead ends: 1129 [2024-11-13 14:36:20,534 INFO L226 Difference]: Without dead ends: 603 [2024-11-13 14:36:20,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 603 SyntacticMatches, 127 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37485 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=26871, Invalid=84351, Unknown=0, NotChecked=0, Total=111222 [2024-11-13 14:36:20,539 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 803 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:36:20,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1987 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 14:36:20,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-13 14:36:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 405. [2024-11-13 14:36:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.00990099009901) internal successors, (408), 404 states have internal predecessors, (408), 0 states have call successors, (0), 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 14:36:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 408 transitions. [2024-11-13 14:36:20,580 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 408 transitions. Word has length 400 [2024-11-13 14:36:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:36:20,580 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 408 transitions. [2024-11-13 14:36:20,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 3.334975369458128) internal successors, (677), 203 states have internal predecessors, (677), 0 states have call successors, (0), 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 14:36:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 408 transitions. [2024-11-13 14:36:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-13 14:36:20,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:36:20,582 INFO L215 NwaCegarLoop]: trace histogram [67, 66, 66, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:36:20,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-11-13 14:36:20,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-13 14:36:20,783 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:36:20,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:36:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash -412586636, now seen corresponding path program 78 times [2024-11-13 14:36:20,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:36:20,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625914586] [2024-11-13 14:36:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:36:20,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:36:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:36:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4290 proven. 8582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:36:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625914586] [2024-11-13 14:36:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625914586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:36:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505919673] [2024-11-13 14:36:27,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:36:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:27,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:36:27,413 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:36:27,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-13 14:36:28,590 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2024-11-13 14:36:28,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:36:28,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-13 14:36:28,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:36:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4422 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:29,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:36:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4422 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:34,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505919673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:36:34,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:36:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 73 [2024-11-13 14:36:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419689092] [2024-11-13 14:36:34,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:36:34,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 14:36:34,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:36:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 14:36:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2424, Invalid=2832, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 14:36:34,211 INFO L87 Difference]: Start difference. First operand 405 states and 408 transitions. Second operand has 73 states, 73 states have (on average 5.8493150684931505) internal successors, (427), 73 states have internal predecessors, (427), 0 states have call successors, (0), 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 14:36:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:36:36,472 INFO L93 Difference]: Finished difference Result 422 states and 426 transitions. [2024-11-13 14:36:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-13 14:36:36,473 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.8493150684931505) internal successors, (427), 73 states have internal predecessors, (427), 0 states have call successors, (0), 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 404 [2024-11-13 14:36:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:36:36,474 INFO L225 Difference]: With dead ends: 422 [2024-11-13 14:36:36,474 INFO L226 Difference]: Without dead ends: 420 [2024-11-13 14:36:36,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 738 SyntacticMatches, 132 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9623 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=7248, Invalid=12212, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 14:36:36,476 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 11 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:36:36,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 561 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:36:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-13 14:36:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 413. [2024-11-13 14:36:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0097087378640777) internal successors, (416), 412 states have internal predecessors, (416), 0 states have call successors, (0), 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 14:36:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 416 transitions. [2024-11-13 14:36:36,518 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 416 transitions. Word has length 404 [2024-11-13 14:36:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:36:36,518 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 416 transitions. [2024-11-13 14:36:36,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.8493150684931505) internal successors, (427), 73 states have internal predecessors, (427), 0 states have call successors, (0), 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 14:36:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 416 transitions. [2024-11-13 14:36:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-13 14:36:36,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:36:36,521 INFO L215 NwaCegarLoop]: trace histogram [68, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:36:36,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-13 14:36:36,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:36,721 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:36:36,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:36:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash 534354394, now seen corresponding path program 79 times [2024-11-13 14:36:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:36:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927117693] [2024-11-13 14:36:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:36:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:36:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:36:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8780 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:36:48,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:36:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927117693] [2024-11-13 14:36:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927117693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:36:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350861595] [2024-11-13 14:36:48,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:36:48,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:48,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:36:48,296 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:36:48,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-13 14:36:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:36:49,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-13 14:36:49,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:36:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8976 proven. 4422 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:36:57,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:37:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8976 proven. 4422 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:37:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350861595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:37:03,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:37:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 136, 136] total 206 [2024-11-13 14:37:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409071722] [2024-11-13 14:37:03,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:37:03,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2024-11-13 14:37:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:37:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2024-11-13 14:37:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9456, Invalid=32774, Unknown=0, NotChecked=0, Total=42230 [2024-11-13 14:37:03,251 INFO L87 Difference]: Start difference. First operand 413 states and 416 transitions. Second operand has 206 states, 206 states have (on average 3.3398058252427183) internal successors, (688), 206 states have internal predecessors, (688), 0 states have call successors, (0), 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 14:37:08,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:37:08,725 INFO L93 Difference]: Finished difference Result 889 states and 1027 transitions. [2024-11-13 14:37:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-13 14:37:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 3.3398058252427183) internal successors, (688), 206 states have internal predecessors, (688), 0 states have call successors, (0), 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 412 [2024-11-13 14:37:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:37:08,727 INFO L225 Difference]: With dead ends: 889 [2024-11-13 14:37:08,727 INFO L226 Difference]: Without dead ends: 616 [2024-11-13 14:37:08,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 623 SyntacticMatches, 132 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27847 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=18570, Invalid=55686, Unknown=0, NotChecked=0, Total=74256 [2024-11-13 14:37:08,730 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 672 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:37:08,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1915 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:37:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-13 14:37:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 415. [2024-11-13 14:37:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0096618357487923) internal successors, (418), 414 states have internal predecessors, (418), 0 states have call successors, (0), 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 14:37:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 418 transitions. [2024-11-13 14:37:08,765 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 418 transitions. Word has length 412 [2024-11-13 14:37:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:37:08,765 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 418 transitions. [2024-11-13 14:37:08,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 3.3398058252427183) internal successors, (688), 206 states have internal predecessors, (688), 0 states have call successors, (0), 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 14:37:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 418 transitions. [2024-11-13 14:37:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-13 14:37:08,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:37:08,769 INFO L215 NwaCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:37:08,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-13 14:37:08,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cba975-0a2f-4c0c-a463-f9f835d1ddd7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:37:08,969 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:37:08,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:37:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1893400767, now seen corresponding path program 80 times [2024-11-13 14:37:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:37:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120095800] [2024-11-13 14:37:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:37:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:37:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat