./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/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_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/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 64bit --witnessprinter.graph.data.programhash 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:14:51,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:14:51,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 13:14:51,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:14:51,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:14:51,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:14:51,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:14:51,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:14:51,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:14:51,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:14:51,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:14:51,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:14:51,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:14:51,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:14:51,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:14:51,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:14:51,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:14:51,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:51,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:14:51,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:14:51,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:14:51,742 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_a0768f1e-cb09-4457-8042-7f2ea906d6a9/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a [2024-11-13 13:14:52,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:14:52,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:14:52,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:14:52,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:14:52,196 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:14:52,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c Unable to find full path for "g++" [2024-11-13 13:14:54,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:14:55,140 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:14:55,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-11-13 13:14:55,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/data/65710e3f2/7957853fcce148ab96bb521f55a548a6/FLAG59cea7c98 [2024-11-13 13:14:55,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/data/65710e3f2/7957853fcce148ab96bb521f55a548a6 [2024-11-13 13:14:55,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:14:55,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:14:55,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:55,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:14:55,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:14:55,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:55,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b018dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55, skipping insertion in model container [2024-11-13 13:14:55,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:55,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:14:55,523 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_a0768f1e-cb09-4457-8042-7f2ea906d6a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-11-13 13:14:55,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:55,671 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:14:55,685 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_a0768f1e-cb09-4457-8042-7f2ea906d6a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-11-13 13:14:55,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:55,804 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:14:55,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55 WrapperNode [2024-11-13 13:14:55,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:55,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:55,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:14:55,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:14:55,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:55,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:55,973 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 650 [2024-11-13 13:14:55,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:55,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:14:55,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:14:55,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:14:55,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:55,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,056 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 13:14:56,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:14:56,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:14:56,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:14:56,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:14:56,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (1/1) ... [2024-11-13 13:14:56,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:56,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:56,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:14:56,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:14:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:14:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:14:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:14:56,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:14:56,483 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:14:56,486 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:14:58,215 INFO L? ?]: Removed 394 outVars from TransFormulas that were not future-live. [2024-11-13 13:14:58,215 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:14:58,233 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:14:58,233 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:14:58,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:58 BoogieIcfgContainer [2024-11-13 13:14:58,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:14:58,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:14:58,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:14:58,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:14:58,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:14:55" (1/3) ... [2024-11-13 13:14:58,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b541717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:58, skipping insertion in model container [2024-11-13 13:14:58,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:55" (2/3) ... [2024-11-13 13:14:58,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b541717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:58, skipping insertion in model container [2024-11-13 13:14:58,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:58" (3/3) ... [2024-11-13 13:14:58,247 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2024-11-13 13:14:58,268 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:14:58,270 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.sw_ball2004_1.c that has 1 procedures, 194 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:14:58,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:14:58,400 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;@4fbeba09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:14:58,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:14:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 192 states have (on average 1.4947916666666667) internal successors, (287), 193 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 13:14:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:14:58,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:58,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:58,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:58,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1579872556, now seen corresponding path program 1 times [2024-11-13 13:14:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810890720] [2024-11-13 13:14:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:58,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:59,467 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 13:14:59,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:59,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810890720] [2024-11-13 13:14:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810890720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:14:59,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853162146] [2024-11-13 13:14:59,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:59,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:14:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:14:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:14:59,516 INFO L87 Difference]: Start difference. First operand has 194 states, 192 states have (on average 1.4947916666666667) internal successors, (287), 193 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) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 13:14:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:59,614 INFO L93 Difference]: Finished difference Result 349 states and 519 transitions. [2024-11-13 13:14:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:14:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 13:14:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:59,630 INFO L225 Difference]: With dead ends: 349 [2024-11-13 13:14:59,630 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 13:14:59,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:14:59,639 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:59,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:14:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 13:14:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-13 13:14:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.484375) internal successors, (285), 192 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 285 transitions. [2024-11-13 13:14:59,725 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 285 transitions. Word has length 27 [2024-11-13 13:14:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:59,726 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 285 transitions. [2024-11-13 13:14:59,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 13:14:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 285 transitions. [2024-11-13 13:14:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:14:59,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:59,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:59,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:14:59,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:59,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1729713684, now seen corresponding path program 1 times [2024-11-13 13:14:59,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030569895] [2024-11-13 13:14:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:00,089 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 13:15:00,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:00,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030569895] [2024-11-13 13:15:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030569895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:15:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632970115] [2024-11-13 13:15:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:00,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:15:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:15:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:15:00,096 INFO L87 Difference]: Start difference. First operand 193 states and 285 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 13:15:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:00,187 INFO L93 Difference]: Finished difference Result 350 states and 517 transitions. [2024-11-13 13:15:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:15:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) Word has length 28 [2024-11-13 13:15:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:00,189 INFO L225 Difference]: With dead ends: 350 [2024-11-13 13:15:00,189 INFO L226 Difference]: Without dead ends: 195 [2024-11-13 13:15:00,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:15:00,192 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:00,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:15:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-13 13:15:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-13 13:15:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4793814432989691) internal successors, (287), 194 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 13:15:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 287 transitions. [2024-11-13 13:15:00,210 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 287 transitions. Word has length 28 [2024-11-13 13:15:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:00,210 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 287 transitions. [2024-11-13 13:15:00,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 13:15:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 287 transitions. [2024-11-13 13:15:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:15:00,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:00,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:00,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:15:00,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:00,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1115484845, now seen corresponding path program 1 times [2024-11-13 13:15:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947260769] [2024-11-13 13:15:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:00,613 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 13:15:00,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947260769] [2024-11-13 13:15:00,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947260769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:00,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:00,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664943067] [2024-11-13 13:15:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:00,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:00,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:00,619 INFO L87 Difference]: Start difference. First operand 195 states and 287 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:00,808 INFO L93 Difference]: Finished difference Result 483 states and 712 transitions. [2024-11-13 13:15:00,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-13 13:15:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:00,812 INFO L225 Difference]: With dead ends: 483 [2024-11-13 13:15:00,812 INFO L226 Difference]: Without dead ends: 326 [2024-11-13 13:15:00,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:00,814 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 649 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:00,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 813 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-13 13:15:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 197. [2024-11-13 13:15:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 196 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 289 transitions. [2024-11-13 13:15:00,835 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 289 transitions. Word has length 29 [2024-11-13 13:15:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:00,836 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 289 transitions. [2024-11-13 13:15:00,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 289 transitions. [2024-11-13 13:15:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 13:15:00,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:00,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:00,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:15:00,841 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:00,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1751736360, now seen corresponding path program 1 times [2024-11-13 13:15:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330222006] [2024-11-13 13:15:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330222006] [2024-11-13 13:15:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330222006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295794310] [2024-11-13 13:15:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:02,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:02,726 INFO L87 Difference]: Start difference. First operand 197 states and 289 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 13:15:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:02,930 INFO L93 Difference]: Finished difference Result 475 states and 699 transitions. [2024-11-13 13:15:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 106 [2024-11-13 13:15:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:02,933 INFO L225 Difference]: With dead ends: 475 [2024-11-13 13:15:02,934 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 13:15:02,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:02,940 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 597 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:02,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 805 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 13:15:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 244. [2024-11-13 13:15:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.4650205761316872) internal successors, (356), 243 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 13:15:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 356 transitions. [2024-11-13 13:15:02,975 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 356 transitions. Word has length 106 [2024-11-13 13:15:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:02,978 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 356 transitions. [2024-11-13 13:15:02,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 13:15:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 356 transitions. [2024-11-13 13:15:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 13:15:02,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:02,988 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:02,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:15:02,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:02,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 481492987, now seen corresponding path program 1 times [2024-11-13 13:15:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678580867] [2024-11-13 13:15:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:04,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:04,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678580867] [2024-11-13 13:15:04,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678580867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:04,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:04,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:04,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470483107] [2024-11-13 13:15:04,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:04,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:04,534 INFO L87 Difference]: Start difference. First operand 244 states and 356 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 13:15:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:04,723 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2024-11-13 13:15:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:04,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) Word has length 108 [2024-11-13 13:15:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:04,727 INFO L225 Difference]: With dead ends: 475 [2024-11-13 13:15:04,727 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 13:15:04,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:04,731 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 575 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:04,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 13:15:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 279. [2024-11-13 13:15:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.4640287769784173) internal successors, (407), 278 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 407 transitions. [2024-11-13 13:15:04,758 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 407 transitions. Word has length 108 [2024-11-13 13:15:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:04,760 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 407 transitions. [2024-11-13 13:15:04,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 13:15:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 407 transitions. [2024-11-13 13:15:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 13:15:04,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:04,769 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:04,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:15:04,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:04,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -338239037, now seen corresponding path program 1 times [2024-11-13 13:15:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961836692] [2024-11-13 13:15:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961836692] [2024-11-13 13:15:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961836692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122632312] [2024-11-13 13:15:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:05,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:05,874 INFO L87 Difference]: Start difference. First operand 279 states and 407 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:06,022 INFO L93 Difference]: Finished difference Result 533 states and 780 transitions. [2024-11-13 13:15:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:06,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-13 13:15:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:06,025 INFO L225 Difference]: With dead ends: 533 [2024-11-13 13:15:06,027 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 13:15:06,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:06,029 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 603 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:06,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 811 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 13:15:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 279. [2024-11-13 13:15:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.4568345323741008) internal successors, (405), 278 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 405 transitions. [2024-11-13 13:15:06,051 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 405 transitions. Word has length 109 [2024-11-13 13:15:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:06,051 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 405 transitions. [2024-11-13 13:15:06,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 405 transitions. [2024-11-13 13:15:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 13:15:06,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:06,056 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:06,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:15:06,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:06,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash 736900224, now seen corresponding path program 1 times [2024-11-13 13:15:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124406051] [2024-11-13 13:15:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:07,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124406051] [2024-11-13 13:15:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124406051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:07,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58553069] [2024-11-13 13:15:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:07,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:07,405 INFO L87 Difference]: Start difference. First operand 279 states and 405 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:07,564 INFO L93 Difference]: Finished difference Result 475 states and 694 transitions. [2024-11-13 13:15:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:07,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-11-13 13:15:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:07,566 INFO L225 Difference]: With dead ends: 475 [2024-11-13 13:15:07,566 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 13:15:07,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:07,568 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 556 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:07,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 13:15:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 299. [2024-11-13 13:15:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4563758389261745) internal successors, (434), 298 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 434 transitions. [2024-11-13 13:15:07,590 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 434 transitions. Word has length 111 [2024-11-13 13:15:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:07,590 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 434 transitions. [2024-11-13 13:15:07,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 434 transitions. [2024-11-13 13:15:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 13:15:07,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:07,593 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:07,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:15:07,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:07,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1350775393, now seen corresponding path program 1 times [2024-11-13 13:15:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:07,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359146040] [2024-11-13 13:15:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:07,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:08,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359146040] [2024-11-13 13:15:08,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359146040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:08,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:08,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506729564] [2024-11-13 13:15:08,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:08,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:08,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:08,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:08,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:08,670 INFO L87 Difference]: Start difference. First operand 299 states and 434 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:08,842 INFO L93 Difference]: Finished difference Result 478 states and 698 transitions. [2024-11-13 13:15:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 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 13:15:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:08,847 INFO L225 Difference]: With dead ends: 478 [2024-11-13 13:15:08,847 INFO L226 Difference]: Without dead ends: 321 [2024-11-13 13:15:08,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:08,849 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 549 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:08,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 800 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-13 13:15:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2024-11-13 13:15:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4559748427672956) internal successors, (463), 318 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 463 transitions. [2024-11-13 13:15:08,865 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 463 transitions. Word has length 112 [2024-11-13 13:15:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:08,865 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 463 transitions. [2024-11-13 13:15:08,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 463 transitions. [2024-11-13 13:15:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 13:15:08,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:08,870 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:08,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:15:08,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:08,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1363731229, now seen corresponding path program 1 times [2024-11-13 13:15:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285491727] [2024-11-13 13:15:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285491727] [2024-11-13 13:15:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285491727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:09,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:09,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614107586] [2024-11-13 13:15:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:09,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:15:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:15:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:09,906 INFO L87 Difference]: Start difference. First operand 319 states and 463 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:10,151 INFO L93 Difference]: Finished difference Result 483 states and 704 transitions. [2024-11-13 13:15:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:15:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-13 13:15:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:10,155 INFO L225 Difference]: With dead ends: 483 [2024-11-13 13:15:10,155 INFO L226 Difference]: Without dead ends: 326 [2024-11-13 13:15:10,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:15:10,160 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 558 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:10,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1226 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-13 13:15:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 322. [2024-11-13 13:15:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.4548286604361371) internal successors, (467), 321 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 467 transitions. [2024-11-13 13:15:10,191 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 467 transitions. Word has length 113 [2024-11-13 13:15:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:10,191 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 467 transitions. [2024-11-13 13:15:10,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 467 transitions. [2024-11-13 13:15:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 13:15:10,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:10,193 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:10,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:15:10,193 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:10,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash -747703928, now seen corresponding path program 1 times [2024-11-13 13:15:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:10,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097705501] [2024-11-13 13:15:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097705501] [2024-11-13 13:15:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097705501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:11,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921574194] [2024-11-13 13:15:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:11,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:15:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:15:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:11,213 INFO L87 Difference]: Start difference. First operand 322 states and 467 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:11,510 INFO L93 Difference]: Finished difference Result 502 states and 730 transitions. [2024-11-13 13:15:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:15:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 13:15:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:11,513 INFO L225 Difference]: With dead ends: 502 [2024-11-13 13:15:11,513 INFO L226 Difference]: Without dead ends: 328 [2024-11-13 13:15:11,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:15:11,515 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 573 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:11,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1226 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:15:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-13 13:15:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2024-11-13 13:15:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.4520123839009287) internal successors, (469), 323 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 469 transitions. [2024-11-13 13:15:11,533 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 469 transitions. Word has length 114 [2024-11-13 13:15:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:11,533 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 469 transitions. [2024-11-13 13:15:11,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 469 transitions. [2024-11-13 13:15:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 13:15:11,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:11,535 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:11,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:15:11,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:11,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1275613194, now seen corresponding path program 1 times [2024-11-13 13:15:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148692214] [2024-11-13 13:15:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:12,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:12,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148692214] [2024-11-13 13:15:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148692214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:12,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:12,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716664663] [2024-11-13 13:15:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:12,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:15:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:12,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:15:12,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:12,631 INFO L87 Difference]: Start difference. First operand 324 states and 469 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 13:15:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:12,891 INFO L93 Difference]: Finished difference Result 491 states and 714 transitions. [2024-11-13 13:15:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:15:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 115 [2024-11-13 13:15:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:12,894 INFO L225 Difference]: With dead ends: 491 [2024-11-13 13:15:12,894 INFO L226 Difference]: Without dead ends: 334 [2024-11-13 13:15:12,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:15:12,895 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 566 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:12,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1146 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:15:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-13 13:15:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2024-11-13 13:15:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.4498480243161094) internal successors, (477), 329 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 13:15:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 477 transitions. [2024-11-13 13:15:12,909 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 477 transitions. Word has length 115 [2024-11-13 13:15:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:12,910 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 477 transitions. [2024-11-13 13:15:12,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 13:15:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 477 transitions. [2024-11-13 13:15:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 13:15:12,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:12,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:12,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:15:12,912 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:12,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1251688026, now seen corresponding path program 1 times [2024-11-13 13:15:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:12,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275782942] [2024-11-13 13:15:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:12,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275782942] [2024-11-13 13:15:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275782942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:15:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570181384] [2024-11-13 13:15:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:13,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:15:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:15:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:15:13,971 INFO L87 Difference]: Start difference. First operand 330 states and 477 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 13:15:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:14,170 INFO L93 Difference]: Finished difference Result 536 states and 777 transitions. [2024-11-13 13:15:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:14,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 115 [2024-11-13 13:15:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:14,174 INFO L225 Difference]: With dead ends: 536 [2024-11-13 13:15:14,174 INFO L226 Difference]: Without dead ends: 330 [2024-11-13 13:15:14,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:15:14,175 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 565 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:14,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1070 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-13 13:15:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2024-11-13 13:15:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.446808510638298) internal successors, (476), 329 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 476 transitions. [2024-11-13 13:15:14,189 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 476 transitions. Word has length 115 [2024-11-13 13:15:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:14,190 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 476 transitions. [2024-11-13 13:15:14,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 13:15:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 476 transitions. [2024-11-13 13:15:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 13:15:14,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:14,192 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:14,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:15:14,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:14,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash -182504569, now seen corresponding path program 1 times [2024-11-13 13:15:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444627418] [2024-11-13 13:15:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444627418] [2024-11-13 13:15:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444627418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:15:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452056453] [2024-11-13 13:15:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:15,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:15,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:15:15,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:15:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:16,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 13:15:16,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:15:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:18,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:15:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452056453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:15:20,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:15:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 32 [2024-11-13 13:15:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131453848] [2024-11-13 13:15:20,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:15:20,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:15:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:15:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:15:20,655 INFO L87 Difference]: Start difference. First operand 330 states and 476 transitions. Second operand has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 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 13:15:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:22,948 INFO L93 Difference]: Finished difference Result 880 states and 1272 transitions. [2024-11-13 13:15:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:15:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 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) Word has length 116 [2024-11-13 13:15:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:22,952 INFO L225 Difference]: With dead ends: 880 [2024-11-13 13:15:22,953 INFO L226 Difference]: Without dead ends: 601 [2024-11-13 13:15:22,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:15:22,957 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 2288 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 4180 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:22,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 4180 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 13:15:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-13 13:15:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 472. [2024-11-13 13:15:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.4331210191082802) internal successors, (675), 471 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 675 transitions. [2024-11-13 13:15:22,977 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 675 transitions. Word has length 116 [2024-11-13 13:15:22,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:22,979 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 675 transitions. [2024-11-13 13:15:22,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 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 13:15:22,980 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 675 transitions. [2024-11-13 13:15:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 13:15:22,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:22,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:23,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:15:23,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:23,188 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:23,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1218739401, now seen corresponding path program 1 times [2024-11-13 13:15:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51339213] [2024-11-13 13:15:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51339213] [2024-11-13 13:15:23,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51339213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:23,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:23,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:15:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206162899] [2024-11-13 13:15:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:23,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:15:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:15:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:15:23,636 INFO L87 Difference]: Start difference. First operand 472 states and 675 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:23,737 INFO L93 Difference]: Finished difference Result 752 states and 1079 transitions. [2024-11-13 13:15:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-13 13:15:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:23,740 INFO L225 Difference]: With dead ends: 752 [2024-11-13 13:15:23,740 INFO L226 Difference]: Without dead ends: 471 [2024-11-13 13:15:23,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:15:23,742 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 617 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:23,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 814 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-13 13:15:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2024-11-13 13:15:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.4294871794871795) internal successors, (669), 468 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 669 transitions. [2024-11-13 13:15:23,760 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 669 transitions. Word has length 117 [2024-11-13 13:15:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:23,760 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 669 transitions. [2024-11-13 13:15:23,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 669 transitions. [2024-11-13 13:15:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 13:15:23,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:23,763 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:23,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:15:23,763 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:23,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2052352048, now seen corresponding path program 1 times [2024-11-13 13:15:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494249313] [2024-11-13 13:15:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:24,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:24,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494249313] [2024-11-13 13:15:24,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494249313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:24,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:24,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:15:24,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648661595] [2024-11-13 13:15:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:24,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:15:24,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:15:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:15:24,284 INFO L87 Difference]: Start difference. First operand 469 states and 669 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:24,419 INFO L93 Difference]: Finished difference Result 626 states and 900 transitions. [2024-11-13 13:15:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:15:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-13 13:15:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:24,422 INFO L225 Difference]: With dead ends: 626 [2024-11-13 13:15:24,422 INFO L226 Difference]: Without dead ends: 344 [2024-11-13 13:15:24,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:15:24,423 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 591 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:24,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1076 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:15:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-13 13:15:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-13 13:15:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.434402332361516) internal successors, (492), 343 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 492 transitions. [2024-11-13 13:15:24,442 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 492 transitions. Word has length 117 [2024-11-13 13:15:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:24,442 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 492 transitions. [2024-11-13 13:15:24,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:24,443 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 492 transitions. [2024-11-13 13:15:24,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 13:15:24,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:24,446 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:24,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:15:24,447 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:24,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1807475006, now seen corresponding path program 1 times [2024-11-13 13:15:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:24,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300455782] [2024-11-13 13:15:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300455782] [2024-11-13 13:15:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300455782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:15:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185943158] [2024-11-13 13:15:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:30,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:30,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:15:30,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:15:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:31,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 13:15:31,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:15:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:32,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:15:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185943158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:15:35,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:15:35,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 10] total 30 [2024-11-13 13:15:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975003104] [2024-11-13 13:15:35,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:15:35,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:15:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:15:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:15:35,512 INFO L87 Difference]: Start difference. First operand 344 states and 492 transitions. Second operand has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:39,700 INFO L93 Difference]: Finished difference Result 1962 states and 2823 transitions. [2024-11-13 13:15:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 13:15:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 0 states have call successors, (0), 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 193 [2024-11-13 13:15:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:39,708 INFO L225 Difference]: With dead ends: 1962 [2024-11-13 13:15:39,708 INFO L226 Difference]: Without dead ends: 1805 [2024-11-13 13:15:39,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=979, Invalid=6161, Unknown=0, NotChecked=0, Total=7140 [2024-11-13 13:15:39,713 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 8211 mSDsluCounter, 6195 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:39,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8211 Valid, 6555 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 13:15:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2024-11-13 13:15:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1119. [2024-11-13 13:15:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.424865831842576) internal successors, (1593), 1118 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1593 transitions. [2024-11-13 13:15:39,756 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1593 transitions. Word has length 193 [2024-11-13 13:15:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:39,756 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1593 transitions. [2024-11-13 13:15:39,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1593 transitions. [2024-11-13 13:15:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-13 13:15:39,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:39,761 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:39,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:15:39,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:39,965 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:39,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1044630017, now seen corresponding path program 1 times [2024-11-13 13:15:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426988683] [2024-11-13 13:15:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:15:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426988683] [2024-11-13 13:15:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426988683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:15:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588463441] [2024-11-13 13:15:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:43,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:15:43,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:15:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:44,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 13:15:44,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:15:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:46,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:15:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:15:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588463441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:15:49,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:15:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 36 [2024-11-13 13:15:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951719860] [2024-11-13 13:15:49,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:15:49,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:15:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:49,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:15:49,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:15:49,626 INFO L87 Difference]: Start difference. First operand 1119 states and 1593 transitions. Second operand has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:58,225 INFO L93 Difference]: Finished difference Result 7305 states and 10494 transitions. [2024-11-13 13:15:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-13 13:15:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 0 states have call successors, (0), 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 195 [2024-11-13 13:15:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:58,248 INFO L225 Difference]: With dead ends: 7305 [2024-11-13 13:15:58,248 INFO L226 Difference]: Without dead ends: 6619 [2024-11-13 13:15:58,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9710 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3150, Invalid=24906, Unknown=0, NotChecked=0, Total=28056 [2024-11-13 13:15:58,258 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 7879 mSDsluCounter, 6983 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7879 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:58,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7879 Valid, 7332 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 13:15:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2024-11-13 13:15:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4763. [2024-11-13 13:15:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4762 states have (on average 1.4265014699706007) internal successors, (6793), 4762 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6793 transitions. [2024-11-13 13:15:58,444 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6793 transitions. Word has length 195 [2024-11-13 13:15:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:58,445 INFO L471 AbstractCegarLoop]: Abstraction has 4763 states and 6793 transitions. [2024-11-13 13:15:58,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6793 transitions. [2024-11-13 13:15:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 13:15:58,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:58,456 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:58,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:15:58,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:58,657 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:58,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1288141017, now seen corresponding path program 1 times [2024-11-13 13:15:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942797861] [2024-11-13 13:15:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942797861] [2024-11-13 13:16:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942797861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:16:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332551498] [2024-11-13 13:16:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:03,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:16:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:16:03,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:16:03,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:16:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:04,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-13 13:16:04,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:16:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:07,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:16:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:10,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332551498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:16:10,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:16:10,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 22] total 54 [2024-11-13 13:16:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855071437] [2024-11-13 13:16:10,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:16:10,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 13:16:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 13:16:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=2427, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 13:16:10,611 INFO L87 Difference]: Start difference. First operand 4763 states and 6793 transitions. Second operand has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:16:47,037 INFO L93 Difference]: Finished difference Result 20225 states and 29447 transitions. [2024-11-13 13:16:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2024-11-13 13:16:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 0 states have call successors, (0), 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 196 [2024-11-13 13:16:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:16:47,078 INFO L225 Difference]: With dead ends: 20225 [2024-11-13 13:16:47,079 INFO L226 Difference]: Without dead ends: 17057 [2024-11-13 13:16:47,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55388 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=16253, Invalid=120277, Unknown=0, NotChecked=0, Total=136530 [2024-11-13 13:16:47,104 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 37835 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37835 SdHoareTripleChecker+Valid, 10331 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:16:47,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37835 Valid, 10331 Invalid, 4686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 13:16:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2024-11-13 13:16:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 10701. [2024-11-13 13:16:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10701 states, 10700 states have (on average 1.4457009345794392) internal successors, (15469), 10700 states have internal predecessors, (15469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10701 states to 10701 states and 15469 transitions. [2024-11-13 13:16:47,465 INFO L78 Accepts]: Start accepts. Automaton has 10701 states and 15469 transitions. Word has length 196 [2024-11-13 13:16:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:16:47,465 INFO L471 AbstractCegarLoop]: Abstraction has 10701 states and 15469 transitions. [2024-11-13 13:16:47,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 10701 states and 15469 transitions. [2024-11-13 13:16:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:16:47,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:16:47,487 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:47,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:16:47,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:16:47,692 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:16:47,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash 29764293, now seen corresponding path program 1 times [2024-11-13 13:16:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626510939] [2024-11-13 13:16:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:47,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:16:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:48,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626510939] [2024-11-13 13:16:48,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626510939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:48,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:48,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:16:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395972435] [2024-11-13 13:16:48,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:48,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:16:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:16:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:16:48,398 INFO L87 Difference]: Start difference. First operand 10701 states and 15469 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:16:48,512 INFO L93 Difference]: Finished difference Result 16452 states and 23920 transitions. [2024-11-13 13:16:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:16:48,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 198 [2024-11-13 13:16:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:16:48,537 INFO L225 Difference]: With dead ends: 16452 [2024-11-13 13:16:48,538 INFO L226 Difference]: Without dead ends: 10741 [2024-11-13 13:16:48,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:16:48,546 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 2 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:16:48,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1090 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:16:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2024-11-13 13:16:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 10725. [2024-11-13 13:16:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 1.445076464005968) internal successors, (15497), 10724 states have internal predecessors, (15497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 15497 transitions. [2024-11-13 13:16:48,746 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 15497 transitions. Word has length 198 [2024-11-13 13:16:48,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:16:48,748 INFO L471 AbstractCegarLoop]: Abstraction has 10725 states and 15497 transitions. [2024-11-13 13:16:48,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 15497 transitions. [2024-11-13 13:16:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:16:48,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:16:48,770 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:48,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:16:48,770 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:16:48,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -330543717, now seen corresponding path program 1 times [2024-11-13 13:16:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:48,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490801013] [2024-11-13 13:16:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 13:16:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490801013] [2024-11-13 13:16:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490801013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:50,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:50,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:16:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400795721] [2024-11-13 13:16:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:50,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:16:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:16:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:16:50,270 INFO L87 Difference]: Start difference. First operand 10725 states and 15497 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:16:50,409 INFO L93 Difference]: Finished difference Result 18981 states and 27518 transitions. [2024-11-13 13:16:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:16:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-13 13:16:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:16:50,443 INFO L225 Difference]: With dead ends: 18981 [2024-11-13 13:16:50,443 INFO L226 Difference]: Without dead ends: 14753 [2024-11-13 13:16:50,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:16:50,451 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 453 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:16:50,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1646 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:16:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14753 states. [2024-11-13 13:16:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14753 to 12142. [2024-11-13 13:16:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 1.4456799275183263) internal successors, (17552), 12141 states have internal predecessors, (17552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 17552 transitions. [2024-11-13 13:16:50,636 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 17552 transitions. Word has length 198 [2024-11-13 13:16:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:16:50,636 INFO L471 AbstractCegarLoop]: Abstraction has 12142 states and 17552 transitions. [2024-11-13 13:16:50,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 17552 transitions. [2024-11-13 13:16:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:16:50,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:16:50,656 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:50,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 13:16:50,657 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:16:50,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1640455791, now seen corresponding path program 1 times [2024-11-13 13:16:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964923322] [2024-11-13 13:16:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:50,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-13 13:16:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:51,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964923322] [2024-11-13 13:16:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964923322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:51,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:51,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:16:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546945311] [2024-11-13 13:16:51,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:51,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:16:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:16:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:16:51,400 INFO L87 Difference]: Start difference. First operand 12142 states and 17552 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:16:51,544 INFO L93 Difference]: Finished difference Result 17716 states and 25754 transitions. [2024-11-13 13:16:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:16:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-13 13:16:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:16:51,572 INFO L225 Difference]: With dead ends: 17716 [2024-11-13 13:16:51,572 INFO L226 Difference]: Without dead ends: 9789 [2024-11-13 13:16:51,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:16:51,582 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 565 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:16:51,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 813 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:16:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2024-11-13 13:16:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 9789. [2024-11-13 13:16:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 1.4507560277891296) internal successors, (14200), 9788 states have internal predecessors, (14200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 14200 transitions. [2024-11-13 13:16:51,797 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 14200 transitions. Word has length 198 [2024-11-13 13:16:51,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:16:51,798 INFO L471 AbstractCegarLoop]: Abstraction has 9789 states and 14200 transitions. [2024-11-13 13:16:51,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 14200 transitions. [2024-11-13 13:16:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 13:16:51,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:16:51,814 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:51,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 13:16:51,814 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:16:51,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1093581974, now seen corresponding path program 1 times [2024-11-13 13:16:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887193571] [2024-11-13 13:16:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:51,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:16:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887193571] [2024-11-13 13:16:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887193571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:16:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163713189] [2024-11-13 13:16:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:54,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:16:54,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:16:54,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:16:54,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:16:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:55,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 13:16:55,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:16:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:56,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:16:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:16:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163713189] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:16:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:16:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 13] total 26 [2024-11-13 13:16:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738516212] [2024-11-13 13:16:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:56,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:16:56,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:16:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:16:56,712 INFO L87 Difference]: Start difference. First operand 9789 states and 14200 transitions. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 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 13:16:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:16:57,388 INFO L93 Difference]: Finished difference Result 16995 states and 24772 transitions. [2024-11-13 13:16:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:16:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 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 199 [2024-11-13 13:16:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:16:57,412 INFO L225 Difference]: With dead ends: 16995 [2024-11-13 13:16:57,412 INFO L226 Difference]: Without dead ends: 10989 [2024-11-13 13:16:57,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:16:57,423 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 217 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:16:57,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2933 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:16:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10989 states. [2024-11-13 13:16:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10989 to 10461. [2024-11-13 13:16:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 1.445889101338432) internal successors, (15124), 10460 states have internal predecessors, (15124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:16:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 15124 transitions. [2024-11-13 13:16:57,597 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 15124 transitions. Word has length 199 [2024-11-13 13:16:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:16:57,598 INFO L471 AbstractCegarLoop]: Abstraction has 10461 states and 15124 transitions. [2024-11-13 13:16:57,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 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 13:16:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 15124 transitions. [2024-11-13 13:16:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 13:16:57,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:16:57,609 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:57,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:16:57,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:16:57,809 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:16:57,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:57,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1780675846, now seen corresponding path program 1 times [2024-11-13 13:16:57,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:57,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287602342] [2024-11-13 13:16:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:17:00,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:00,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287602342] [2024-11-13 13:17:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287602342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:00,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775785247] [2024-11-13 13:17:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:00,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:00,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:00,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:00,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:17:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:01,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-13 13:17:01,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:03,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:17:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 13:17:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775785247] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:04,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:17:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 17] total 27 [2024-11-13 13:17:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524206122] [2024-11-13 13:17:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:04,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:17:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:17:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:17:04,043 INFO L87 Difference]: Start difference. First operand 10461 states and 15124 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 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 13:17:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:04,353 INFO L93 Difference]: Finished difference Result 33107 states and 48043 transitions. [2024-11-13 13:17:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:17:04,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 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) Word has length 199 [2024-11-13 13:17:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:04,370 INFO L225 Difference]: With dead ends: 33107 [2024-11-13 13:17:04,370 INFO L226 Difference]: Without dead ends: 13877 [2024-11-13 13:17:04,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:17:04,387 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 703 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:04,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1151 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:17:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13877 states. [2024-11-13 13:17:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13877 to 11579. [2024-11-13 13:17:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11579 states, 11578 states have (on average 1.4448954914493004) internal successors, (16729), 11578 states have internal predecessors, (16729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11579 states to 11579 states and 16729 transitions. [2024-11-13 13:17:04,560 INFO L78 Accepts]: Start accepts. Automaton has 11579 states and 16729 transitions. Word has length 199 [2024-11-13 13:17:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:04,560 INFO L471 AbstractCegarLoop]: Abstraction has 11579 states and 16729 transitions. [2024-11-13 13:17:04,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 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 13:17:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 11579 states and 16729 transitions. [2024-11-13 13:17:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 13:17:04,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:04,570 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:04,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:17:04,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:04,771 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:04,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1449563644, now seen corresponding path program 1 times [2024-11-13 13:17:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:04,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366838840] [2024-11-13 13:17:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:17:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366838840] [2024-11-13 13:17:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366838840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150314331] [2024-11-13 13:17:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:07,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:07,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:07,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:17:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:08,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 284 conjuncts are in the unsatisfiable core [2024-11-13 13:17:08,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:13,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:17:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 13:17:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150314331] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:17:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [8, 32] total 57 [2024-11-13 13:17:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919225117] [2024-11-13 13:17:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:16,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:17:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:17:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2861, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 13:17:16,292 INFO L87 Difference]: Start difference. First operand 11579 states and 16729 transitions. Second operand has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 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 13:17:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:22,975 INFO L93 Difference]: Finished difference Result 66042 states and 96176 transitions. [2024-11-13 13:17:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 13:17:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 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) Word has length 199 [2024-11-13 13:17:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:23,023 INFO L225 Difference]: With dead ends: 66042 [2024-11-13 13:17:23,023 INFO L226 Difference]: Without dead ends: 52425 [2024-11-13 13:17:23,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=848, Invalid=6808, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 13:17:23,042 INFO L432 NwaCegarLoop]: 1088 mSDtfsCounter, 1513 mSDsluCounter, 7206 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 8294 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:23,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 8294 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 13:17:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52425 states. [2024-11-13 13:17:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52425 to 14826. [2024-11-13 13:17:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14826 states, 14825 states have (on average 1.4522765598650929) internal successors, (21530), 14825 states have internal predecessors, (21530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14826 states to 14826 states and 21530 transitions. [2024-11-13 13:17:23,508 INFO L78 Accepts]: Start accepts. Automaton has 14826 states and 21530 transitions. Word has length 199 [2024-11-13 13:17:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:23,509 INFO L471 AbstractCegarLoop]: Abstraction has 14826 states and 21530 transitions. [2024-11-13 13:17:23,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 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 13:17:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14826 states and 21530 transitions. [2024-11-13 13:17:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 13:17:23,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:23,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:23,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:17:23,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 13:17:23,723 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:23,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2108153004, now seen corresponding path program 1 times [2024-11-13 13:17:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771850562] [2024-11-13 13:17:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771850562] [2024-11-13 13:17:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771850562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665081443] [2024-11-13 13:17:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:25,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:25,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:25,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:17:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:26,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 13:17:26,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:27,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:17:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:31,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665081443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:17:31,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:17:31,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 19] total 37 [2024-11-13 13:17:31,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232330762] [2024-11-13 13:17:31,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:17:31,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 13:17:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 13:17:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 13:17:31,309 INFO L87 Difference]: Start difference. First operand 14826 states and 21530 transitions. Second operand has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:35,905 INFO L93 Difference]: Finished difference Result 27795 states and 40464 transitions. [2024-11-13 13:17:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 13:17:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 0 states have call successors, (0), 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 199 [2024-11-13 13:17:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:35,918 INFO L225 Difference]: With dead ends: 27795 [2024-11-13 13:17:35,918 INFO L226 Difference]: Without dead ends: 15322 [2024-11-13 13:17:35,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=873, Invalid=5447, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 13:17:35,925 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 2520 mSDsluCounter, 9997 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 10497 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:35,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 10497 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 13:17:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2024-11-13 13:17:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 13994. [2024-11-13 13:17:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 13993 states have (on average 1.448009719145287) internal successors, (20262), 13993 states have internal predecessors, (20262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 20262 transitions. [2024-11-13 13:17:36,157 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 20262 transitions. Word has length 199 [2024-11-13 13:17:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:36,157 INFO L471 AbstractCegarLoop]: Abstraction has 13994 states and 20262 transitions. [2024-11-13 13:17:36,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 20262 transitions. [2024-11-13 13:17:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-13 13:17:36,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:36,170 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:36,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:17:36,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 13:17:36,371 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:36,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:36,372 INFO L85 PathProgramCache]: Analyzing trace with hash 800174890, now seen corresponding path program 1 times [2024-11-13 13:17:36,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:36,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874966809] [2024-11-13 13:17:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 170 proven. 11 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 13:17:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874966809] [2024-11-13 13:17:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874966809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45867456] [2024-11-13 13:17:41,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:41,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:41,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:41,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:41,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:17:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:42,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-13 13:17:42,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 119 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:17:43,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:17:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 13:17:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45867456] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:17:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 20] total 38 [2024-11-13 13:17:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880500281] [2024-11-13 13:17:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:44,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:17:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:17:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 13:17:44,583 INFO L87 Difference]: Start difference. First operand 13994 states and 20262 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:45,037 INFO L93 Difference]: Finished difference Result 45235 states and 66098 transitions. [2024-11-13 13:17:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:17:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 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 277 [2024-11-13 13:17:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:45,057 INFO L225 Difference]: With dead ends: 45235 [2024-11-13 13:17:45,057 INFO L226 Difference]: Without dead ends: 25646 [2024-11-13 13:17:45,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:17:45,070 INFO L432 NwaCegarLoop]: 650 mSDtfsCounter, 819 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:45,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1807 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:17:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25646 states. [2024-11-13 13:17:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25646 to 16611. [2024-11-13 13:17:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16611 states, 16610 states have (on average 1.4507525586995786) internal successors, (24097), 16610 states have internal predecessors, (24097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16611 states to 16611 states and 24097 transitions. [2024-11-13 13:17:45,297 INFO L78 Accepts]: Start accepts. Automaton has 16611 states and 24097 transitions. Word has length 277 [2024-11-13 13:17:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:45,297 INFO L471 AbstractCegarLoop]: Abstraction has 16611 states and 24097 transitions. [2024-11-13 13:17:45,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16611 states and 24097 transitions. [2024-11-13 13:17:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-13 13:17:45,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:45,305 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:45,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:17:45,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 13:17:45,506 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:45,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1262011759, now seen corresponding path program 1 times [2024-11-13 13:17:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:45,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136597838] [2024-11-13 13:17:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:17:48,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:48,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136597838] [2024-11-13 13:17:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136597838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:17:48,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:17:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:17:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349918529] [2024-11-13 13:17:48,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:48,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:17:48,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:17:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:17:48,636 INFO L87 Difference]: Start difference. First operand 16611 states and 24097 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:48,881 INFO L93 Difference]: Finished difference Result 28943 states and 42194 transitions. [2024-11-13 13:17:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:17:48,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2024-11-13 13:17:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:48,896 INFO L225 Difference]: With dead ends: 28943 [2024-11-13 13:17:48,896 INFO L226 Difference]: Without dead ends: 17298 [2024-11-13 13:17:48,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:17:48,905 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 116 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:48,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1485 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:17:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2024-11-13 13:17:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 17186. [2024-11-13 13:17:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17186 states, 17185 states have (on average 1.4502182135583357) internal successors, (24922), 17185 states have internal predecessors, (24922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17186 states to 17186 states and 24922 transitions. [2024-11-13 13:17:49,193 INFO L78 Accepts]: Start accepts. Automaton has 17186 states and 24922 transitions. Word has length 277 [2024-11-13 13:17:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:49,194 INFO L471 AbstractCegarLoop]: Abstraction has 17186 states and 24922 transitions. [2024-11-13 13:17:49,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 17186 states and 24922 transitions. [2024-11-13 13:17:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-13 13:17:49,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:49,214 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:49,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 13:17:49,214 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:49,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1167232792, now seen corresponding path program 1 times [2024-11-13 13:17:49,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:49,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289972195] [2024-11-13 13:17:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:49,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 17 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 13:17:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289972195] [2024-11-13 13:17:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289972195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303789934] [2024-11-13 13:17:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:53,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:53,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:53,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:17:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:54,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-13 13:17:54,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 13:17:55,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:17:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 13:17:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303789934] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:56,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:17:56,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 14] total 28 [2024-11-13 13:17:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553805629] [2024-11-13 13:17:56,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:56,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:17:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:17:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:17:56,497 INFO L87 Difference]: Start difference. First operand 17186 states and 24922 transitions. Second operand has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 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 13:17:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:56,982 INFO L93 Difference]: Finished difference Result 54108 states and 78903 transitions. [2024-11-13 13:17:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:17:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 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) Word has length 277 [2024-11-13 13:17:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:57,005 INFO L225 Difference]: With dead ends: 54108 [2024-11-13 13:17:57,006 INFO L226 Difference]: Without dead ends: 28989 [2024-11-13 13:17:57,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:17:57,024 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 494 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:57,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2308 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:17:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2024-11-13 13:17:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 20922. [2024-11-13 13:17:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20922 states, 20921 states have (on average 1.4524640313560537) internal successors, (30387), 20921 states have internal predecessors, (30387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20922 states to 20922 states and 30387 transitions. [2024-11-13 13:17:57,253 INFO L78 Accepts]: Start accepts. Automaton has 20922 states and 30387 transitions. Word has length 277 [2024-11-13 13:17:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:57,254 INFO L471 AbstractCegarLoop]: Abstraction has 20922 states and 30387 transitions. [2024-11-13 13:17:57,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 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 13:17:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20922 states and 30387 transitions. [2024-11-13 13:17:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-13 13:17:57,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:57,268 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:57,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:17:57,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:17:57,469 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:57,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash -649162282, now seen corresponding path program 1 times [2024-11-13 13:17:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53592275] [2024-11-13 13:17:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 205 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53592275] [2024-11-13 13:18:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53592275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386337694] [2024-11-13 13:18:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:02,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:02,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:18:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:03,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-13 13:18:03,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 182 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:05,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:18:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:18:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386337694] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:18:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12, 21] total 44 [2024-11-13 13:18:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116748077] [2024-11-13 13:18:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:07,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:18:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:18:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:18:07,461 INFO L87 Difference]: Start difference. First operand 20922 states and 30387 transitions. Second operand has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 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 13:18:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:09,060 INFO L93 Difference]: Finished difference Result 85548 states and 125024 transitions. [2024-11-13 13:18:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 13:18:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 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 278 [2024-11-13 13:18:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:09,102 INFO L225 Difference]: With dead ends: 85548 [2024-11-13 13:18:09,102 INFO L226 Difference]: Without dead ends: 54204 [2024-11-13 13:18:09,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=244, Invalid=2408, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:18:09,123 INFO L432 NwaCegarLoop]: 705 mSDtfsCounter, 1168 mSDsluCounter, 4194 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:09,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 4899 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:18:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54204 states. [2024-11-13 13:18:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54204 to 40897. [2024-11-13 13:18:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40897 states, 40896 states have (on average 1.4609741784037558) internal successors, (59748), 40896 states have internal predecessors, (59748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40897 states to 40897 states and 59748 transitions. [2024-11-13 13:18:09,696 INFO L78 Accepts]: Start accepts. Automaton has 40897 states and 59748 transitions. Word has length 278 [2024-11-13 13:18:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:09,697 INFO L471 AbstractCegarLoop]: Abstraction has 40897 states and 59748 transitions. [2024-11-13 13:18:09,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 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 13:18:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 40897 states and 59748 transitions. [2024-11-13 13:18:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-13 13:18:09,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:09,751 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:09,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:18:09,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:18:09,952 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:09,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 851578919, now seen corresponding path program 1 times [2024-11-13 13:18:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209267349] [2024-11-13 13:18:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 170 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-13 13:18:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209267349] [2024-11-13 13:18:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209267349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625224424] [2024-11-13 13:18:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:12,694 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:12,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:18:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:13,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 13:18:13,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 166 proven. 62 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:18:15,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:18:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 13:18:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625224424] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:16,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:18:16,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 13] total 27 [2024-11-13 13:18:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67892039] [2024-11-13 13:18:16,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:16,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:18:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:18:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:18:16,282 INFO L87 Difference]: Start difference. First operand 40897 states and 59748 transitions. Second operand has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:17,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:17,381 INFO L93 Difference]: Finished difference Result 123038 states and 180221 transitions. [2024-11-13 13:18:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:18:17,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-13 13:18:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:17,420 INFO L225 Difference]: With dead ends: 123038 [2024-11-13 13:18:17,420 INFO L226 Difference]: Without dead ends: 55560 [2024-11-13 13:18:17,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 539 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:18:17,436 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 648 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:17,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2126 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:18:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55560 states. [2024-11-13 13:18:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55560 to 42239. [2024-11-13 13:18:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42239 states, 42238 states have (on average 1.4615985605379043) internal successors, (61735), 42238 states have internal predecessors, (61735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42239 states to 42239 states and 61735 transitions. [2024-11-13 13:18:17,862 INFO L78 Accepts]: Start accepts. Automaton has 42239 states and 61735 transitions. Word has length 278 [2024-11-13 13:18:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:17,862 INFO L471 AbstractCegarLoop]: Abstraction has 42239 states and 61735 transitions. [2024-11-13 13:18:17,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 42239 states and 61735 transitions. [2024-11-13 13:18:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-13 13:18:17,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:17,885 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:17,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:18:18,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:18,085 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:18,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1188704407, now seen corresponding path program 1 times [2024-11-13 13:18:18,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:18,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611075510] [2024-11-13 13:18:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 167 proven. 17 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 13:18:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611075510] [2024-11-13 13:18:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611075510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056508539] [2024-11-13 13:18:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:21,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:21,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:21,513 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:21,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:18:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:22,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 13:18:22,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 67 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 13:18:23,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:18:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 168 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:18:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056508539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:18:25,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:18:25,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 26 [2024-11-13 13:18:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612710091] [2024-11-13 13:18:25,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:18:25,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:18:25,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:18:25,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:18:25,752 INFO L87 Difference]: Start difference. First operand 42239 states and 61735 transitions. Second operand has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:27,915 INFO L93 Difference]: Finished difference Result 94091 states and 137747 transitions. [2024-11-13 13:18:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 13:18:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-13 13:18:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:27,962 INFO L225 Difference]: With dead ends: 94091 [2024-11-13 13:18:27,962 INFO L226 Difference]: Without dead ends: 59232 [2024-11-13 13:18:27,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 13:18:27,986 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 3277 mSDsluCounter, 5709 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:27,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 6160 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:18:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59232 states. [2024-11-13 13:18:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59232 to 50131. [2024-11-13 13:18:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50131 states, 50130 states have (on average 1.4623179732694993) internal successors, (73306), 50130 states have internal predecessors, (73306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50131 states to 50131 states and 73306 transitions. [2024-11-13 13:18:28,504 INFO L78 Accepts]: Start accepts. Automaton has 50131 states and 73306 transitions. Word has length 278 [2024-11-13 13:18:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:28,505 INFO L471 AbstractCegarLoop]: Abstraction has 50131 states and 73306 transitions. [2024-11-13 13:18:28,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 50131 states and 73306 transitions. [2024-11-13 13:18:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-13 13:18:28,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:28,520 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:28,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:18:28,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:28,721 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:28,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1429032304, now seen corresponding path program 1 times [2024-11-13 13:18:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634313693] [2024-11-13 13:18:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-13 13:18:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:31,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634313693] [2024-11-13 13:18:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634313693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:31,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:18:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207269940] [2024-11-13 13:18:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:31,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:18:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:31,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:18:31,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:18:31,964 INFO L87 Difference]: Start difference. First operand 50131 states and 73306 transitions. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:32,448 INFO L93 Difference]: Finished difference Result 108730 states and 159504 transitions. [2024-11-13 13:18:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:18:32,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 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 279 [2024-11-13 13:18:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:32,516 INFO L225 Difference]: With dead ends: 108730 [2024-11-13 13:18:32,516 INFO L226 Difference]: Without dead ends: 66271 [2024-11-13 13:18:32,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:18:32,546 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 150 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:32,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1912 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:18:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66271 states. [2024-11-13 13:18:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66271 to 50947. [2024-11-13 13:18:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50947 states, 50946 states have (on average 1.4609194048600478) internal successors, (74428), 50946 states have internal predecessors, (74428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50947 states to 50947 states and 74428 transitions. [2024-11-13 13:18:33,375 INFO L78 Accepts]: Start accepts. Automaton has 50947 states and 74428 transitions. Word has length 279 [2024-11-13 13:18:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:33,375 INFO L471 AbstractCegarLoop]: Abstraction has 50947 states and 74428 transitions. [2024-11-13 13:18:33,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 50947 states and 74428 transitions. [2024-11-13 13:18:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 13:18:33,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:33,402 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:33,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 13:18:33,402 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:33,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 682043033, now seen corresponding path program 1 times [2024-11-13 13:18:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483491284] [2024-11-13 13:18:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 13:18:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483491284] [2024-11-13 13:18:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483491284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674602306] [2024-11-13 13:18:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:36,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:36,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:36,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:18:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:37,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:18:37,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:18:37,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:18:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674602306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:37,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:18:37,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-13 13:18:37,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68548655] [2024-11-13 13:18:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:37,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:18:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:18:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:18:37,766 INFO L87 Difference]: Start difference. First operand 50947 states and 74428 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:38,218 INFO L93 Difference]: Finished difference Result 104946 states and 153594 transitions. [2024-11-13 13:18:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:18:38,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 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 13:18:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:38,272 INFO L225 Difference]: With dead ends: 104946 [2024-11-13 13:18:38,272 INFO L226 Difference]: Without dead ends: 60079 [2024-11-13 13:18:38,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:18:38,300 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 246 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:38,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2380 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:18:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60079 states. [2024-11-13 13:18:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60079 to 50466. [2024-11-13 13:18:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50466 states, 50465 states have (on average 1.4619637372436343) internal successors, (73778), 50465 states have internal predecessors, (73778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50466 states to 50466 states and 73778 transitions. [2024-11-13 13:18:38,849 INFO L78 Accepts]: Start accepts. Automaton has 50466 states and 73778 transitions. Word has length 280 [2024-11-13 13:18:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:38,850 INFO L471 AbstractCegarLoop]: Abstraction has 50466 states and 73778 transitions. [2024-11-13 13:18:38,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 50466 states and 73778 transitions. [2024-11-13 13:18:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 13:18:38,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:38,866 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:38,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:18:39,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 13:18:39,067 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:39,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1760789467, now seen corresponding path program 1 times [2024-11-13 13:18:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:39,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301778556] [2024-11-13 13:18:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:39,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 167 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:18:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:41,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301778556] [2024-11-13 13:18:41,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301778556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:41,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185374342] [2024-11-13 13:18:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:41,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:41,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:41,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:18:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:43,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-13 13:18:43,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 67 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 13:18:44,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:18:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 13:18:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185374342] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:18:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 11] total 22 [2024-11-13 13:18:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394560698] [2024-11-13 13:18:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:45,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:18:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:18:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:18:45,095 INFO L87 Difference]: Start difference. First operand 50466 states and 73778 transitions. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:45,647 INFO L93 Difference]: Finished difference Result 162220 states and 237636 transitions. [2024-11-13 13:18:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:18:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 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 13:18:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:45,702 INFO L225 Difference]: With dead ends: 162220 [2024-11-13 13:18:45,702 INFO L226 Difference]: Without dead ends: 64980 [2024-11-13 13:18:45,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:18:45,746 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 321 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:45,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1323 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:18:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64980 states. [2024-11-13 13:18:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64980 to 63840. [2024-11-13 13:18:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63840 states, 63839 states have (on average 1.4636037531916226) internal successors, (93435), 63839 states have internal predecessors, (93435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63840 states to 63840 states and 93435 transitions. [2024-11-13 13:18:46,354 INFO L78 Accepts]: Start accepts. Automaton has 63840 states and 93435 transitions. Word has length 280 [2024-11-13 13:18:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:46,354 INFO L471 AbstractCegarLoop]: Abstraction has 63840 states and 93435 transitions. [2024-11-13 13:18:46,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 63840 states and 93435 transitions. [2024-11-13 13:18:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 13:18:46,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:46,376 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:46,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:18:46,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 13:18:46,576 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:46,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1517944585, now seen corresponding path program 1 times [2024-11-13 13:18:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996788338] [2024-11-13 13:18:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:18:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996788338] [2024-11-13 13:18:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996788338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691016656] [2024-11-13 13:18:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:49,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:49,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:49,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:18:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:50,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-13 13:18:50,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 180 proven. 24 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 13:18:51,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:18:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-13 13:18:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691016656] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:51,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:18:51,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 14] total 27 [2024-11-13 13:18:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068282887] [2024-11-13 13:18:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:51,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:18:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:18:51,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:18:51,958 INFO L87 Difference]: Start difference. First operand 63840 states and 93435 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:52,959 INFO L93 Difference]: Finished difference Result 166137 states and 243633 transitions. [2024-11-13 13:18:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:18:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 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 13:18:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:53,045 INFO L225 Difference]: With dead ends: 166137 [2024-11-13 13:18:53,045 INFO L226 Difference]: Without dead ends: 97496 [2024-11-13 13:18:53,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:18:53,066 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 806 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:53,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1880 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:18:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97496 states. [2024-11-13 13:18:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97496 to 67813. [2024-11-13 13:18:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67813 states, 67812 states have (on average 1.462307556184746) internal successors, (99162), 67812 states have internal predecessors, (99162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67813 states to 67813 states and 99162 transitions. [2024-11-13 13:18:54,184 INFO L78 Accepts]: Start accepts. Automaton has 67813 states and 99162 transitions. Word has length 280 [2024-11-13 13:18:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:18:54,184 INFO L471 AbstractCegarLoop]: Abstraction has 67813 states and 99162 transitions. [2024-11-13 13:18:54,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 67813 states and 99162 transitions. [2024-11-13 13:18:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-13 13:18:54,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:18:54,226 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:54,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:18:54,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:18:54,427 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:18:54,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash -633843279, now seen corresponding path program 1 times [2024-11-13 13:18:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:54,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262767672] [2024-11-13 13:18:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:18:57,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262767672] [2024-11-13 13:18:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262767672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:18:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779449260] [2024-11-13 13:18:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:57,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:18:57,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:57,163 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:18:57,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:18:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:58,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:18:58,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:18:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 13:18:58,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:18:58,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779449260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:58,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:18:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-13 13:18:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722381397] [2024-11-13 13:18:58,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:58,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:18:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:58,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:18:58,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:18:58,938 INFO L87 Difference]: Start difference. First operand 67813 states and 99162 transitions. Second operand has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:18:59,359 INFO L93 Difference]: Finished difference Result 139146 states and 203789 transitions. [2024-11-13 13:18:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:18:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 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 281 [2024-11-13 13:18:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:18:59,422 INFO L225 Difference]: With dead ends: 139146 [2024-11-13 13:18:59,422 INFO L226 Difference]: Without dead ends: 74913 [2024-11-13 13:18:59,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:18:59,458 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 140 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:18:59,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1816 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:18:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74913 states. [2024-11-13 13:19:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74913 to 66761. [2024-11-13 13:19:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66761 states, 66760 states have (on average 1.4607100059916118) internal successors, (97517), 66760 states have internal predecessors, (97517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66761 states to 66761 states and 97517 transitions. [2024-11-13 13:19:00,571 INFO L78 Accepts]: Start accepts. Automaton has 66761 states and 97517 transitions. Word has length 281 [2024-11-13 13:19:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:19:00,572 INFO L471 AbstractCegarLoop]: Abstraction has 66761 states and 97517 transitions. [2024-11-13 13:19:00,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 66761 states and 97517 transitions. [2024-11-13 13:19:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-13 13:19:00,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:19:00,608 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:19:00,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 13:19:00,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 13:19:00,809 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:19:00,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:19:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash 483188634, now seen corresponding path program 1 times [2024-11-13 13:19:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:19:00,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031494105] [2024-11-13 13:19:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:19:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:19:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031494105] [2024-11-13 13:19:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031494105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794682084] [2024-11-13 13:19:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:03,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:19:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:19:03,777 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:19:03,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:19:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:05,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 13:19:05,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:19:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 130 proven. 95 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:19:06,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:19:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-13 13:19:06,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794682084] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:06,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:19:06,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 12] total 25 [2024-11-13 13:19:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186639408] [2024-11-13 13:19:06,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:19:06,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:19:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:19:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:19:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:19:06,761 INFO L87 Difference]: Start difference. First operand 66761 states and 97517 transitions. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:19:07,766 INFO L93 Difference]: Finished difference Result 217356 states and 318104 transitions. [2024-11-13 13:19:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:19:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 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 281 [2024-11-13 13:19:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:19:07,845 INFO L225 Difference]: With dead ends: 217356 [2024-11-13 13:19:07,845 INFO L226 Difference]: Without dead ends: 96945 [2024-11-13 13:19:07,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:19:07,891 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 883 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:19:07,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1383 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:19:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96945 states. [2024-11-13 13:19:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96945 to 65921. [2024-11-13 13:19:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65921 states, 65920 states have (on average 1.4596935679611651) internal successors, (96223), 65920 states have internal predecessors, (96223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65921 states to 65921 states and 96223 transitions. [2024-11-13 13:19:09,129 INFO L78 Accepts]: Start accepts. Automaton has 65921 states and 96223 transitions. Word has length 281 [2024-11-13 13:19:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:19:09,130 INFO L471 AbstractCegarLoop]: Abstraction has 65921 states and 96223 transitions. [2024-11-13 13:19:09,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 65921 states and 96223 transitions. [2024-11-13 13:19:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-13 13:19:09,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:19:09,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:19:09,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 13:19:09,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:19:09,366 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:19:09,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:19:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1228433115, now seen corresponding path program 1 times [2024-11-13 13:19:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:19:09,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235058429] [2024-11-13 13:19:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:19:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 169 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-13 13:19:12,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235058429] [2024-11-13 13:19:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235058429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115320429] [2024-11-13 13:19:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:19:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:19:12,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:19:12,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:19:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:14,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-13 13:19:14,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:19:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 170 proven. 56 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:19:15,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:19:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 226 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:19:16,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115320429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:19:16,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:19:16,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 34 [2024-11-13 13:19:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138816979] [2024-11-13 13:19:16,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:19:16,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:19:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:19:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:19:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:19:16,987 INFO L87 Difference]: Start difference. First operand 65921 states and 96223 transitions. Second operand has 34 states, 34 states have (on average 18.58823529411765) internal successors, (632), 34 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:21,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:19:21,362 INFO L93 Difference]: Finished difference Result 152264 states and 222669 transitions. [2024-11-13 13:19:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:19:21,363 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 18.58823529411765) internal successors, (632), 34 states have internal predecessors, (632), 0 states have call successors, (0), 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 282 [2024-11-13 13:19:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:19:21,437 INFO L225 Difference]: With dead ends: 152264 [2024-11-13 13:19:21,438 INFO L226 Difference]: Without dead ends: 89085 [2024-11-13 13:19:21,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=662, Invalid=4450, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 13:19:21,476 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 2514 mSDsluCounter, 11774 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 12365 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:19:21,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 12365 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 13:19:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89085 states. [2024-11-13 13:19:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89085 to 83155. [2024-11-13 13:19:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83155 states, 83154 states have (on average 1.4596892512687303) internal successors, (121379), 83154 states have internal predecessors, (121379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83155 states to 83155 states and 121379 transitions. [2024-11-13 13:19:22,543 INFO L78 Accepts]: Start accepts. Automaton has 83155 states and 121379 transitions. Word has length 282 [2024-11-13 13:19:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:19:22,543 INFO L471 AbstractCegarLoop]: Abstraction has 83155 states and 121379 transitions. [2024-11-13 13:19:22,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 18.58823529411765) internal successors, (632), 34 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 83155 states and 121379 transitions. [2024-11-13 13:19:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-13 13:19:22,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:19:22,570 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:19:22,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:19:22,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 13:19:22,771 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:19:22,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:19:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1507045477, now seen corresponding path program 1 times [2024-11-13 13:19:22,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:19:22,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197309274] [2024-11-13 13:19:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:22,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:19:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-13 13:19:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:25,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197309274] [2024-11-13 13:19:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197309274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:19:25,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:19:25,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:19:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823290137] [2024-11-13 13:19:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:19:25,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:19:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:19:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:19:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:19:25,499 INFO L87 Difference]: Start difference. First operand 83155 states and 121379 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 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 13:19:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:19:26,416 INFO L93 Difference]: Finished difference Result 148617 states and 217055 transitions. [2024-11-13 13:19:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:19:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 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 283 [2024-11-13 13:19:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:19:26,499 INFO L225 Difference]: With dead ends: 148617 [2024-11-13 13:19:26,499 INFO L226 Difference]: Without dead ends: 114896 [2024-11-13 13:19:26,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:19:26,514 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 260 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:19:26,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 4048 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:19:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114896 states. [2024-11-13 13:19:27,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114896 to 83172. [2024-11-13 13:19:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83172 states, 83171 states have (on average 1.459619338471342) internal successors, (121398), 83171 states have internal predecessors, (121398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83172 states to 83172 states and 121398 transitions. [2024-11-13 13:19:27,590 INFO L78 Accepts]: Start accepts. Automaton has 83172 states and 121398 transitions. Word has length 283 [2024-11-13 13:19:27,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:19:27,590 INFO L471 AbstractCegarLoop]: Abstraction has 83172 states and 121398 transitions. [2024-11-13 13:19:27,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 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 13:19:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 83172 states and 121398 transitions. [2024-11-13 13:19:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-13 13:19:27,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:19:27,618 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:19:27,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-13 13:19:27,618 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:19:27,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:19:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash 436185511, now seen corresponding path program 1 times [2024-11-13 13:19:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:19:27,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926356420] [2024-11-13 13:19:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 158 proven. 32 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 13:19:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926356420] [2024-11-13 13:19:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926356420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281087542] [2024-11-13 13:19:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:31,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:19:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:19:31,704 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:19:31,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:19:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:33,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 13:19:33,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:19:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 185 proven. 45 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:19:34,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:19:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 13:19:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281087542] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:34,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:19:34,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 11] total 28 [2024-11-13 13:19:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296093814] [2024-11-13 13:19:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:19:34,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:19:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:19:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:19:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:19:34,591 INFO L87 Difference]: Start difference. First operand 83172 states and 121398 transitions. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:19:35,251 INFO L93 Difference]: Finished difference Result 180776 states and 263996 transitions. [2024-11-13 13:19:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:19:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 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 13:19:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:19:35,556 INFO L225 Difference]: With dead ends: 180776 [2024-11-13 13:19:35,556 INFO L226 Difference]: Without dead ends: 99367 [2024-11-13 13:19:35,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 553 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:19:35,583 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 118 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:19:35,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 2084 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:19:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99367 states. [2024-11-13 13:19:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99367 to 86861. [2024-11-13 13:19:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86861 states, 86860 states have (on average 1.4593368639189501) internal successors, (126758), 86860 states have internal predecessors, (126758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86861 states to 86861 states and 126758 transitions. [2024-11-13 13:19:36,698 INFO L78 Accepts]: Start accepts. Automaton has 86861 states and 126758 transitions. Word has length 284 [2024-11-13 13:19:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:19:36,698 INFO L471 AbstractCegarLoop]: Abstraction has 86861 states and 126758 transitions. [2024-11-13 13:19:36,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 86861 states and 126758 transitions. [2024-11-13 13:19:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-13 13:19:36,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:19:36,726 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:19:36,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:19:36,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 13:19:36,926 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:19:36,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:19:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1109565952, now seen corresponding path program 1 times [2024-11-13 13:19:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:19:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440989811] [2024-11-13 13:19:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:19:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 170 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 13:19:39,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:39,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440989811] [2024-11-13 13:19:39,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440989811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:39,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894146252] [2024-11-13 13:19:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:19:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:19:39,767 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:19:39,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0768f1e-cb09-4457-8042-7f2ea906d6a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:19:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:41,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 13:19:41,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:19:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 172 proven. 19 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-13 13:19:42,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:19:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 13:19:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894146252] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:19:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 12] total 24 [2024-11-13 13:19:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72380222] [2024-11-13 13:19:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:19:43,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:19:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:19:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:19:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:19:43,155 INFO L87 Difference]: Start difference. First operand 86861 states and 126758 transitions. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:19:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:19:44,154 INFO L93 Difference]: Finished difference Result 241300 states and 352754 transitions. [2024-11-13 13:19:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:19:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 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 13:19:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:19:44,237 INFO L225 Difference]: With dead ends: 241300 [2024-11-13 13:19:44,237 INFO L226 Difference]: Without dead ends: 90582 [2024-11-13 13:19:44,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:19:44,284 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 375 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:19:44,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1827 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:19:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90582 states.