./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/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_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:36:39,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:36:39,732 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:36:39,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:36:39,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:36:39,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:36:39,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:36:39,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:36:39,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:36:39,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:36:39,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:36:39,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:36:39,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:36:39,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:36:39,767 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:36:39,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:36:39,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:36:39,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:36:39,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:36:39,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:36:39,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:36:39,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:36:39,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:36:39,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:36:39,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:36:39,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:36:39,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:36:39,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:36:39,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:36:39,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:36:39,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:36:39,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:36:39,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:36:39,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:36:39,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:36:39,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:36:39,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:36:39,772 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_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 [2024-11-13 15:36:40,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:36:40,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:36:40,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:36:40,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:36:40,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:36:40,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector/byte_add-1.i Unable to find full path for "g++" [2024-11-13 15:36:42,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:36:42,565 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:36:42,566 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/sv-benchmarks/c/bitvector/byte_add-1.i [2024-11-13 15:36:42,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/data/f91bf253d/56ba752177d3419f8cbea4a02f95149f/FLAGc5aa032e8 [2024-11-13 15:36:42,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/data/f91bf253d/56ba752177d3419f8cbea4a02f95149f [2024-11-13 15:36:42,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:36:42,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:36:42,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:36:42,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:36:42,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:36:42,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:36:42" (1/1) ... [2024-11-13 15:36:42,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b93364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:42, skipping insertion in model container [2024-11-13 15:36:42,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:36:42" (1/1) ... [2024-11-13 15:36:42,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:36:42,850 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_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2024-11-13 15:36:42,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:36:42,952 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:36:42,965 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_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2024-11-13 15:36:42,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:36:43,009 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:36:43,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43 WrapperNode [2024-11-13 15:36:43,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:36:43,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:36:43,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:36:43,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:36:43,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,060 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 147 [2024-11-13 15:36:43,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:36:43,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:36:43,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:36:43,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:36:43,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,105 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:36:43,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:36:43,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:36:43,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:36:43,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:36:43,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (1/1) ... [2024-11-13 15:36:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:36:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:43,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:36:43,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:36:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:36:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:36:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:36:43,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:36:43,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:36:43,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:36:43,703 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-13 15:36:43,703 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:36:43,715 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:36:43,715 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:36:43,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:36:43 BoogieIcfgContainer [2024-11-13 15:36:43,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:36:43,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:36:43,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:36:43,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:36:43,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:36:42" (1/3) ... [2024-11-13 15:36:43,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c469a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:36:43, skipping insertion in model container [2024-11-13 15:36:43,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:36:43" (2/3) ... [2024-11-13 15:36:43,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c469a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:36:43, skipping insertion in model container [2024-11-13 15:36:43,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:36:43" (3/3) ... [2024-11-13 15:36:43,730 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2024-11-13 15:36:43,749 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:36:43,751 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG byte_add-1.i that has 1 procedures, 51 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 15:36:43,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:36:43,829 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;@4b00bc25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:36:43,829 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:36:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:36:43,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:43,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:43,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:43,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:43,849 INFO L85 PathProgramCache]: Analyzing trace with hash -643229382, now seen corresponding path program 1 times [2024-11-13 15:36:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:43,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31097753] [2024-11-13 15:36:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:44,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31097753] [2024-11-13 15:36:44,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31097753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:44,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:44,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:36:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318686796] [2024-11-13 15:36:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:44,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:36:44,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:36:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:36:44,136 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:44,153 INFO L93 Difference]: Finished difference Result 75 states and 122 transitions. [2024-11-13 15:36:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:36:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-13 15:36:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:44,164 INFO L225 Difference]: With dead ends: 75 [2024-11-13 15:36:44,164 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 15:36:44,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:36:44,170 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:44,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:36:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 15:36:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-13 15:36:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2024-11-13 15:36:44,206 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 15 [2024-11-13 15:36:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:44,206 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2024-11-13 15:36:44,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2024-11-13 15:36:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:36:44,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:44,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:44,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:36:44,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:44,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 264360600, now seen corresponding path program 1 times [2024-11-13 15:36:44,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:44,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855178665] [2024-11-13 15:36:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:44,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855178665] [2024-11-13 15:36:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855178665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:44,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:44,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:36:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859100391] [2024-11-13 15:36:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:44,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:36:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:36:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:36:44,540 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:44,775 INFO L93 Difference]: Finished difference Result 107 states and 186 transitions. [2024-11-13 15:36:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:36:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-13 15:36:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:44,777 INFO L225 Difference]: With dead ends: 107 [2024-11-13 15:36:44,777 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 15:36:44,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:36:44,779 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:44,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:36:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 15:36:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-13 15:36:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 67 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 104 transitions. [2024-11-13 15:36:44,789 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 104 transitions. Word has length 15 [2024-11-13 15:36:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:44,789 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 104 transitions. [2024-11-13 15:36:44,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 104 transitions. [2024-11-13 15:36:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:36:44,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:44,791 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] [2024-11-13 15:36:44,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:36:44,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:44,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415229, now seen corresponding path program 1 times [2024-11-13 15:36:44,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:44,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551148107] [2024-11-13 15:36:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:44,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:45,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551148107] [2024-11-13 15:36:45,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551148107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:45,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:45,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:36:45,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147783995] [2024-11-13 15:36:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:45,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:45,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:36:45,021 INFO L87 Difference]: Start difference. First operand 68 states and 104 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:45,437 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2024-11-13 15:36:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:36:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-13 15:36:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:45,439 INFO L225 Difference]: With dead ends: 164 [2024-11-13 15:36:45,439 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 15:36:45,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:45,441 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 92 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:45,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 116 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:36:45,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 15:36:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2024-11-13 15:36:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 139 transitions. [2024-11-13 15:36:45,452 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 139 transitions. Word has length 21 [2024-11-13 15:36:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:45,452 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 139 transitions. [2024-11-13 15:36:45,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 139 transitions. [2024-11-13 15:36:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:36:45,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:45,454 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:45,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:36:45,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:45,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:45,455 INFO L85 PathProgramCache]: Analyzing trace with hash -991010190, now seen corresponding path program 1 times [2024-11-13 15:36:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:45,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349874374] [2024-11-13 15:36:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:45,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:36:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349874374] [2024-11-13 15:36:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349874374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:45,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:45,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:36:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605066866] [2024-11-13 15:36:45,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:45,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:36:45,702 INFO L87 Difference]: Start difference. First operand 91 states and 139 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:45,938 INFO L93 Difference]: Finished difference Result 234 states and 354 transitions. [2024-11-13 15:36:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:36:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 15:36:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:45,940 INFO L225 Difference]: With dead ends: 234 [2024-11-13 15:36:45,940 INFO L226 Difference]: Without dead ends: 156 [2024-11-13 15:36:45,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:45,941 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 70 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:45,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:36:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-13 15:36:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 99. [2024-11-13 15:36:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.510204081632653) internal successors, (148), 98 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions. [2024-11-13 15:36:45,967 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 27 [2024-11-13 15:36:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:45,967 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions. [2024-11-13 15:36:45,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions. [2024-11-13 15:36:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:36:45,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:45,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:45,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:36:45,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:45,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1387372287, now seen corresponding path program 1 times [2024-11-13 15:36:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397853101] [2024-11-13 15:36:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:36:46,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397853101] [2024-11-13 15:36:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397853101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:46,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:46,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:36:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17523362] [2024-11-13 15:36:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:46,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:36:46,193 INFO L87 Difference]: Start difference. First operand 99 states and 148 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:46,409 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2024-11-13 15:36:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:36:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 15:36:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:46,411 INFO L225 Difference]: With dead ends: 255 [2024-11-13 15:36:46,411 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 15:36:46,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:46,412 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 74 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:46,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 188 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:36:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 15:36:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 109. [2024-11-13 15:36:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 108 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 161 transitions. [2024-11-13 15:36:46,424 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 161 transitions. Word has length 28 [2024-11-13 15:36:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:46,425 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 161 transitions. [2024-11-13 15:36:46,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 161 transitions. [2024-11-13 15:36:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:36:46,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:46,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:46,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:36:46,427 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:46,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash 213151683, now seen corresponding path program 1 times [2024-11-13 15:36:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075714379] [2024-11-13 15:36:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075714379] [2024-11-13 15:36:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075714379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263857838] [2024-11-13 15:36:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:46,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:46,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:46,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:36:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:46,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:36:46,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:46,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263857838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-13 15:36:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743488070] [2024-11-13 15:36:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:46,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:36:46,796 INFO L87 Difference]: Start difference. First operand 109 states and 161 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 15:36:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:47,080 INFO L93 Difference]: Finished difference Result 230 states and 363 transitions. [2024-11-13 15:36:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:36:47,083 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 29 [2024-11-13 15:36:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:47,084 INFO L225 Difference]: With dead ends: 230 [2024-11-13 15:36:47,084 INFO L226 Difference]: Without dead ends: 154 [2024-11-13 15:36:47,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:36:47,088 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:47,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 151 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:36:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-13 15:36:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2024-11-13 15:36:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 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 15:36:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2024-11-13 15:36:47,112 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 29 [2024-11-13 15:36:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:47,112 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2024-11-13 15:36:47,112 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 15:36:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2024-11-13 15:36:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:36:47,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:47,114 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:47,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:36:47,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:47,318 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:47,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1627881454, now seen corresponding path program 1 times [2024-11-13 15:36:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:47,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656778373] [2024-11-13 15:36:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:47,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656778373] [2024-11-13 15:36:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656778373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116653503] [2024-11-13 15:36:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:47,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:47,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:36:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:47,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:36:47,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:47,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116653503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:47,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-13 15:36:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788022497] [2024-11-13 15:36:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:47,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:47,761 INFO L87 Difference]: Start difference. First operand 138 states and 196 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 15:36:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:48,038 INFO L93 Difference]: Finished difference Result 288 states and 427 transitions. [2024-11-13 15:36:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:36:48,039 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 35 [2024-11-13 15:36:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:48,040 INFO L225 Difference]: With dead ends: 288 [2024-11-13 15:36:48,040 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 15:36:48,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:48,041 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:48,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 151 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:36:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 15:36:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-11-13 15:36:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 15:36:48,053 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 35 [2024-11-13 15:36:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:48,053 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 15:36:48,053 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 15:36:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 15:36:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 15:36:48,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:48,055 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:48,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:36:48,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:48,256 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:48,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1924204317, now seen corresponding path program 1 times [2024-11-13 15:36:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298548507] [2024-11-13 15:36:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:36:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:48,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298548507] [2024-11-13 15:36:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298548507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:48,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:48,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:36:48,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128700199] [2024-11-13 15:36:48,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:48,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:36:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:48,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:36:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:48,460 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 15:36:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:48,825 INFO L93 Difference]: Finished difference Result 516 states and 714 transitions. [2024-11-13 15:36:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:36:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 41 [2024-11-13 15:36:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:48,828 INFO L225 Difference]: With dead ends: 516 [2024-11-13 15:36:48,828 INFO L226 Difference]: Without dead ends: 385 [2024-11-13 15:36:48,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:48,829 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 152 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:48,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 307 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:36:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-13 15:36:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 161. [2024-11-13 15:36:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 15:36:48,855 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 41 [2024-11-13 15:36:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:48,856 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 15:36:48,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 15:36:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 15:36:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 15:36:48,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:48,861 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:48,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:36:48,861 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:48,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash -477282298, now seen corresponding path program 1 times [2024-11-13 15:36:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759803570] [2024-11-13 15:36:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:36:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759803570] [2024-11-13 15:36:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759803570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:49,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:36:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865264534] [2024-11-13 15:36:49,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:49,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:36:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:36:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:49,093 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 15:36:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:49,507 INFO L93 Difference]: Finished difference Result 496 states and 689 transitions. [2024-11-13 15:36:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:36:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 42 [2024-11-13 15:36:49,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:49,509 INFO L225 Difference]: With dead ends: 496 [2024-11-13 15:36:49,510 INFO L226 Difference]: Without dead ends: 366 [2024-11-13 15:36:49,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:49,515 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 141 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:49,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 272 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:36:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-13 15:36:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 161. [2024-11-13 15:36:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 15:36:49,536 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 42 [2024-11-13 15:36:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:49,536 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 15:36:49,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 15:36:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 15:36:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 15:36:49,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:49,542 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:49,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:36:49,542 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:49,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 111468760, now seen corresponding path program 1 times [2024-11-13 15:36:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823455352] [2024-11-13 15:36:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:36:49,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:49,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823455352] [2024-11-13 15:36:49,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823455352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:49,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:49,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:36:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745174977] [2024-11-13 15:36:49,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:49,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:36:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:36:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:36:49,809 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 15:36:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:50,415 INFO L93 Difference]: Finished difference Result 604 states and 837 transitions. [2024-11-13 15:36:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:36:50,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 43 [2024-11-13 15:36:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:50,417 INFO L225 Difference]: With dead ends: 604 [2024-11-13 15:36:50,418 INFO L226 Difference]: Without dead ends: 474 [2024-11-13 15:36:50,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:36:50,421 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 212 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:50,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 405 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:36:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-13 15:36:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 161. [2024-11-13 15:36:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 15:36:50,444 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 43 [2024-11-13 15:36:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:50,445 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 15:36:50,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 15:36:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 15:36:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 15:36:50,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:50,448 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:50,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:36:50,449 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:50,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash 955474262, now seen corresponding path program 1 times [2024-11-13 15:36:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089878294] [2024-11-13 15:36:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:36:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:50,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089878294] [2024-11-13 15:36:50,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089878294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:50,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:50,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:36:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738218717] [2024-11-13 15:36:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:50,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:36:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:36:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:50,740 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 15:36:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:51,427 INFO L93 Difference]: Finished difference Result 645 states and 888 transitions. [2024-11-13 15:36:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:36:51,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 43 [2024-11-13 15:36:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:51,431 INFO L225 Difference]: With dead ends: 645 [2024-11-13 15:36:51,432 INFO L226 Difference]: Without dead ends: 514 [2024-11-13 15:36:51,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:36:51,434 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 307 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:51,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 574 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:36:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-13 15:36:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 149. [2024-11-13 15:36:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.385135135135135) internal successors, (205), 148 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 205 transitions. [2024-11-13 15:36:51,458 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 205 transitions. Word has length 43 [2024-11-13 15:36:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:51,458 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 205 transitions. [2024-11-13 15:36:51,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 15:36:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 205 transitions. [2024-11-13 15:36:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 15:36:51,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:51,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:51,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:36:51,464 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:51,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1450980084, now seen corresponding path program 1 times [2024-11-13 15:36:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485283126] [2024-11-13 15:36:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485283126] [2024-11-13 15:36:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485283126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145998258] [2024-11-13 15:36:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:51,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:51,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:51,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:36:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:51,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:36:51,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:36:51,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145998258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:51,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-13 15:36:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831820397] [2024-11-13 15:36:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:51,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:36:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:36:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:36:51,877 INFO L87 Difference]: Start difference. First operand 149 states and 205 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:52,049 INFO L93 Difference]: Finished difference Result 420 states and 583 transitions. [2024-11-13 15:36:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:36:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 48 [2024-11-13 15:36:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:52,051 INFO L225 Difference]: With dead ends: 420 [2024-11-13 15:36:52,051 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 15:36:52,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:52,052 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:52,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 184 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:36:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 15:36:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2024-11-13 15:36:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.3474903474903475) internal successors, (349), 259 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 349 transitions. [2024-11-13 15:36:52,072 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 349 transitions. Word has length 48 [2024-11-13 15:36:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:52,072 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 349 transitions. [2024-11-13 15:36:52,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 349 transitions. [2024-11-13 15:36:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:36:52,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:52,073 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-13 15:36:52,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:36:52,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:36:52,278 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:52,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash -264680266, now seen corresponding path program 1 times [2024-11-13 15:36:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603283894] [2024-11-13 15:36:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603283894] [2024-11-13 15:36:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603283894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949605455] [2024-11-13 15:36:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:52,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:52,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:52,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:52,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:36:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:52,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:36:52,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:36:52,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949605455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:52,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2024-11-13 15:36:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163894586] [2024-11-13 15:36:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:52,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:36:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:36:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:36:52,677 INFO L87 Difference]: Start difference. First operand 260 states and 349 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:53,111 INFO L93 Difference]: Finished difference Result 793 states and 1097 transitions. [2024-11-13 15:36:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:36:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 49 [2024-11-13 15:36:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:53,113 INFO L225 Difference]: With dead ends: 793 [2024-11-13 15:36:53,114 INFO L226 Difference]: Without dead ends: 535 [2024-11-13 15:36:53,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:36:53,115 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 148 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:53,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 350 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:36:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-13 15:36:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 490. [2024-11-13 15:36:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3374233128834356) internal successors, (654), 489 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 654 transitions. [2024-11-13 15:36:53,151 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 654 transitions. Word has length 49 [2024-11-13 15:36:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:53,151 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 654 transitions. [2024-11-13 15:36:53,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 654 transitions. [2024-11-13 15:36:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 15:36:53,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:53,154 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:53,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:36:53,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:36:53,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:53,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1348039521, now seen corresponding path program 1 times [2024-11-13 15:36:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:53,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370933685] [2024-11-13 15:36:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:36:53,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370933685] [2024-11-13 15:36:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370933685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:36:53,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707688183] [2024-11-13 15:36:53,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:53,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:36:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:36:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:36:53,605 INFO L87 Difference]: Start difference. First operand 490 states and 654 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:54,237 INFO L93 Difference]: Finished difference Result 1789 states and 2379 transitions. [2024-11-13 15:36:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:36:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 50 [2024-11-13 15:36:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:54,243 INFO L225 Difference]: With dead ends: 1789 [2024-11-13 15:36:54,243 INFO L226 Difference]: Without dead ends: 1449 [2024-11-13 15:36:54,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:36:54,244 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 251 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:54,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 487 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:36:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2024-11-13 15:36:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 478. [2024-11-13 15:36:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.3459119496855345) internal successors, (642), 477 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 642 transitions. [2024-11-13 15:36:54,320 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 642 transitions. Word has length 50 [2024-11-13 15:36:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:54,320 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 642 transitions. [2024-11-13 15:36:54,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 642 transitions. [2024-11-13 15:36:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:36:54,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:54,322 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-13 15:36:54,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:36:54,322 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:54,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1049562336, now seen corresponding path program 1 times [2024-11-13 15:36:54,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:54,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621084584] [2024-11-13 15:36:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:36:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621084584] [2024-11-13 15:36:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621084584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:54,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:36:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:36:54,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836377806] [2024-11-13 15:36:54,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:54,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:36:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:36:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:36:54,499 INFO L87 Difference]: Start difference. First operand 478 states and 642 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:54,770 INFO L93 Difference]: Finished difference Result 1115 states and 1497 transitions. [2024-11-13 15:36:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:36:54,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 15:36:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:54,774 INFO L225 Difference]: With dead ends: 1115 [2024-11-13 15:36:54,774 INFO L226 Difference]: Without dead ends: 738 [2024-11-13 15:36:54,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:36:54,776 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 28 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:54,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 212 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:36:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-13 15:36:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 694. [2024-11-13 15:36:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.3246753246753247) internal successors, (918), 693 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 918 transitions. [2024-11-13 15:36:54,832 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 918 transitions. Word has length 52 [2024-11-13 15:36:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:54,832 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 918 transitions. [2024-11-13 15:36:54,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 918 transitions. [2024-11-13 15:36:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:36:54,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:54,834 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-13 15:36:54,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:36:54,834 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:54,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1104139461, now seen corresponding path program 1 times [2024-11-13 15:36:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:54,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332796647] [2024-11-13 15:36:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332796647] [2024-11-13 15:36:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332796647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630377870] [2024-11-13 15:36:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:55,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:55,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:36:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:55,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:36:55,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:36:55,233 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630377870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:55,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2024-11-13 15:36:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494422406] [2024-11-13 15:36:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:55,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:36:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:36:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:36:55,235 INFO L87 Difference]: Start difference. First operand 694 states and 918 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:55,773 INFO L93 Difference]: Finished difference Result 1501 states and 2004 transitions. [2024-11-13 15:36:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:36:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 53 [2024-11-13 15:36:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:55,778 INFO L225 Difference]: With dead ends: 1501 [2024-11-13 15:36:55,779 INFO L226 Difference]: Without dead ends: 1130 [2024-11-13 15:36:55,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:36:55,780 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 230 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:55,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 403 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:36:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2024-11-13 15:36:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 984. [2024-11-13 15:36:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 1.3204476093591049) internal successors, (1298), 983 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1298 transitions. [2024-11-13 15:36:55,858 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1298 transitions. Word has length 53 [2024-11-13 15:36:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:55,858 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1298 transitions. [2024-11-13 15:36:55,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1298 transitions. [2024-11-13 15:36:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:36:55,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:55,861 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:55,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:36:56,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:36:56,065 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:56,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -305253591, now seen corresponding path program 1 times [2024-11-13 15:36:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:56,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819935458] [2024-11-13 15:36:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:56,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819935458] [2024-11-13 15:36:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819935458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652882452] [2024-11-13 15:36:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:56,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:56,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:36:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:56,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:36:56,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:36:56,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:36:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652882452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:36:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:36:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-13 15:36:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178767953] [2024-11-13 15:36:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:36:56,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:36:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:36:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:36:56,508 INFO L87 Difference]: Start difference. First operand 984 states and 1298 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:57,106 INFO L93 Difference]: Finished difference Result 1839 states and 2442 transitions. [2024-11-13 15:36:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:36:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 15:36:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:57,114 INFO L225 Difference]: With dead ends: 1839 [2024-11-13 15:36:57,114 INFO L226 Difference]: Without dead ends: 1484 [2024-11-13 15:36:57,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:36:57,117 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 144 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:57,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 452 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:36:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2024-11-13 15:36:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1285. [2024-11-13 15:36:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.320872274143302) internal successors, (1696), 1284 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1696 transitions. [2024-11-13 15:36:57,218 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1696 transitions. Word has length 54 [2024-11-13 15:36:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:57,218 INFO L471 AbstractCegarLoop]: Abstraction has 1285 states and 1696 transitions. [2024-11-13 15:36:57,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1696 transitions. [2024-11-13 15:36:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:36:57,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:57,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:57,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:36:57,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:36:57,422 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:57,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:57,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2061441003, now seen corresponding path program 1 times [2024-11-13 15:36:57,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:57,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850119151] [2024-11-13 15:36:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 15:37:01,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850119151] [2024-11-13 15:37:01,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850119151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798122652] [2024-11-13 15:37:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:01,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:01,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:01,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:01,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c57c85c-5c64-40d3-9c1d-77a7083bcb2a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:37:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:01,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 15:37:01,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:37:42,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 15:37:49,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798122652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:49,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:49,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 56 [2024-11-13 15:37:49,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681387541] [2024-11-13 15:37:49,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:49,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:37:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:37:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2702, Unknown=7, NotChecked=0, Total=3080 [2024-11-13 15:37:49,942 INFO L87 Difference]: Start difference. First operand 1285 states and 1696 transitions. Second operand has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 56 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:38:07,168 WARN L286 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 92 DAG size of output: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:38:35,103 WARN L286 SmtUtils]: Spent 16.82s on a formula simplification. DAG size of input: 95 DAG size of output: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:39:26,186 WARN L286 SmtUtils]: Spent 25.09s on a formula simplification. DAG size of input: 111 DAG size of output: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:41:05,798 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 118 DAG size of output: 57 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:41:21,588 WARN L286 SmtUtils]: Spent 13.55s on a formula simplification. DAG size of input: 109 DAG size of output: 76 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:42:17,186 WARN L286 SmtUtils]: Spent 25.36s on a formula simplification. DAG size of input: 114 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:42:31,403 WARN L286 SmtUtils]: Spent 12.38s on a formula simplification. DAG size of input: 107 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:42:56,754 WARN L286 SmtUtils]: Spent 12.63s on a formula simplification. DAG size of input: 112 DAG size of output: 77 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:44:12,854 WARN L286 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 128 DAG size of output: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:44:16,899 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (* (- 256) |c_ULTIMATE.start_mp_add_~b2~0#1|)) (.cse10 (* 256 |c_ULTIMATE.start_mp_add_~b0~0#1|)) (.cse11 (* |c_ULTIMATE.start_mp_add_~b1~0#1| (- 65536))) (.cse12 (* 256 |c_ULTIMATE.start_mp_add_~a0~0#1|)) (.cse13 (* |c_ULTIMATE.start_mp_add_~a1~0#1| (- 65536))) (.cse8 (* (div (+ |c_ULTIMATE.start_main_~a~0#1| (* (- 16777216) |c_ULTIMATE.start_mp_add_~b3~0#1|) |c_ULTIMATE.start_mp_add_~b0~0#1|) 4294967296) 65536)) (.cse9 (* 256 |c_ULTIMATE.start_mp_add_~b3~0#1|)) (.cse5 (mod |c_ULTIMATE.start_mp_add_~a0~0#1| 4294967296))) (let ((.cse0 (div .cse5 16777216)) (.cse3 (< (+ (* 256 (div (+ 65280 |c_ULTIMATE.start_mp_add_~b1~0#1| .cse7 (* 256 (div (+ .cse10 .cse11 .cse12 .cse13 33423871) 16777216))) 65536)) |c_ULTIMATE.start_mp_add_~b2~0#1|) (+ .cse8 256 .cse9))) (.cse4 (let ((.cse6 (div (+ .cse10 .cse11 .cse12 16646655 .cse13) 16777216))) (and (<= (+ |c_ULTIMATE.start_mp_add_~b2~0#1| (* (div (+ (* 256 .cse6) 65280 |c_ULTIMATE.start_mp_add_~b1~0#1| .cse7) 65536) 256)) (+ .cse8 255 .cse9)) (<= (+ (mod (+ (* 255 |c_ULTIMATE.start_mp_add_~b0~0#1|) 255) 256) |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) (+ (* |c_ULTIMATE.start_mp_add_~b1~0#1| 256) (* 65536 .cse6) 510 (* 256 |c_ULTIMATE.start_mp_add_~a1~0#1|)))))) (.cse1 (div .cse5 65536)) (.cse2 (mod |c_ULTIMATE.start_mp_add_~b0~0#1| 4294967296))) (and (= .cse0 |c_ULTIMATE.start_mp_add_~a3~0#1|) (= .cse1 |c_ULTIMATE.start_mp_add_~a2~0#1|) (= |c_ULTIMATE.start_mp_add_~b1~0#1| (div .cse2 256)) (<= |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) (or (< 0 (div |c_ULTIMATE.start_mp_add_~a1~0#1| 256)) .cse3 .cse4) (or (< 0 (mod |c_ULTIMATE.start_mp_add_~b2~0#1| 256)) (= (mod (+ |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|) 4294967296) 0) (< 0 (mod |c_ULTIMATE.start_mp_add_~b3~0#1| 256)) (< 0 (mod |c_ULTIMATE.start_mp_add_~b1~0#1| 256)) (not (= (mod (+ |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) 256) 0)) (< 254 (+ (mod |c_ULTIMATE.start_mp_add_~b0~0#1| 256) (mod |c_ULTIMATE.start_mp_add_~a0~0#1| 256)))) (<= |c_ULTIMATE.start_mp_add_~a1~0#1| 255) (= (div .cse5 256) |c_ULTIMATE.start_mp_add_~a1~0#1|) (<= (div |c_ULTIMATE.start_mp_add_~a3~0#1| 256) 0) (= |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) (<= .cse0 0) (or .cse3 .cse4) (<= (+ (* 65536 (div |c_ULTIMATE.start_mp_add_~a2~0#1| 256)) |c_ULTIMATE.start_mp_add_~a1~0#1|) (+ 255 (* 65536 |c_ULTIMATE.start_mp_add_~a3~0#1|) (* 256 |c_ULTIMATE.start_mp_add_~a2~0#1|))) (= (div .cse2 65536) |c_ULTIMATE.start_mp_add_~b2~0#1|) (<= .cse1 0) (= (div .cse2 16777216) |c_ULTIMATE.start_mp_add_~b3~0#1|) (<= 0 |c_ULTIMATE.start_mp_add_~a3~0#1|) (= |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_main_~b~0#1|)))) is different from false [2024-11-13 15:44:43,395 WARN L286 SmtUtils]: Spent 12.45s on a formula simplification. DAG size of input: 110 DAG size of output: 75 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:45:29,992 WARN L286 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 113 DAG size of output: 75 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:45:56,425 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 111 DAG size of output: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:46:25,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:47:08,008 WARN L286 SmtUtils]: Spent 32.94s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:47:33,221 WARN L286 SmtUtils]: Spent 13.52s on a formula simplification. DAG size of input: 121 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:48:07,077 WARN L286 SmtUtils]: Spent 25.20s on a formula simplification. DAG size of input: 126 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:48:23,715 WARN L286 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 119 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:48:42,157 WARN L286 SmtUtils]: Spent 13.07s on a formula simplification. DAG size of input: 110 DAG size of output: 77 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:49:06,924 WARN L286 SmtUtils]: Spent 13.33s on a formula simplification. DAG size of input: 124 DAG size of output: 89 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:49:11,039 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse18 (* (div (+ |c_ULTIMATE.start_main_~a~0#1| (* (- 16777216) |c_ULTIMATE.start_mp_add_~b3~0#1|) |c_ULTIMATE.start_mp_add_~b0~0#1|) 4294967296) 65536)) (.cse19 (* 256 |c_ULTIMATE.start_mp_add_~b3~0#1|))) (let ((.cse4 (+ .cse18 255 .cse19)) (.cse5 (+ (mod (+ (* 255 |c_ULTIMATE.start_mp_add_~b0~0#1|) 255) 256) |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|)) (.cse6 (* |c_ULTIMATE.start_mp_add_~b1~0#1| 256)) (.cse3 (* (- 256) |c_ULTIMATE.start_mp_add_~b2~0#1|)) (.cse7 (* 256 |c_ULTIMATE.start_mp_add_~b0~0#1|)) (.cse8 (* |c_ULTIMATE.start_mp_add_~b1~0#1| (- 65536))) (.cse9 (* 256 |c_ULTIMATE.start_mp_add_~a0~0#1|)) (.cse17 (* |c_ULTIMATE.start_mp_add_~a1~0#1| (- 65536))) (.cse10 (+ .cse18 256 .cse19)) (.cse15 (mod |c_ULTIMATE.start_mp_add_~a0~0#1| 4294967296))) (let ((.cse1 (div .cse15 256)) (.cse0 (div .cse15 16777216)) (.cse13 (< (+ (* 256 (div (+ 65280 |c_ULTIMATE.start_mp_add_~b1~0#1| .cse3 (* 256 (div (+ .cse7 .cse8 .cse9 .cse17 33423871) 16777216))) 65536)) |c_ULTIMATE.start_mp_add_~b2~0#1|) .cse10)) (.cse14 (let ((.cse16 (div (+ .cse7 .cse8 .cse9 16646655 .cse17) 16777216))) (and (<= (+ |c_ULTIMATE.start_mp_add_~b2~0#1| (* (div (+ (* 256 .cse16) 65280 |c_ULTIMATE.start_mp_add_~b1~0#1| .cse3) 65536) 256)) .cse4) (<= .cse5 (+ .cse6 (* 65536 .cse16) 510 (* 256 |c_ULTIMATE.start_mp_add_~a1~0#1|)))))) (.cse11 (div .cse15 65536)) (.cse12 (mod |c_ULTIMATE.start_mp_add_~b0~0#1| 4294967296))) (and (= .cse0 |c_ULTIMATE.start_mp_add_~a3~0#1|) (or (< 254 (mod (+ |c_ULTIMATE.start_mp_add_~carry~0#1| (mod |c_ULTIMATE.start_mp_add_~b0~0#1| 256) (mod |c_ULTIMATE.start_mp_add_~a0~0#1| 256)) 65536)) (= (mod (+ |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|) 4294967296) 0) (< 0 (mod |c_ULTIMATE.start_mp_add_~i~0#1| 256)) (not (= (mod (+ |c_ULTIMATE.start_mp_add_~carry~0#1| |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) 256) 0))) (<= .cse1 0) (or (let ((.cse2 (div (+ .cse7 .cse8 .cse9 16646655) 16777216))) (and (<= (+ (* 256 (div (+ 65280 (* 256 .cse2) |c_ULTIMATE.start_mp_add_~b1~0#1| .cse3) 65536)) |c_ULTIMATE.start_mp_add_~b2~0#1|) .cse4) (<= .cse5 (+ .cse6 (* 65536 .cse2) 510)))) (< (+ |c_ULTIMATE.start_mp_add_~b2~0#1| (* (div (+ 65280 |c_ULTIMATE.start_mp_add_~b1~0#1| .cse3 (* 256 (div (+ .cse7 .cse8 .cse9 33423871) 16777216))) 65536) 256)) .cse10)) (= .cse11 |c_ULTIMATE.start_mp_add_~a2~0#1|) (= |c_ULTIMATE.start_mp_add_~b1~0#1| (div .cse12 256)) (<= |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) (or (< 0 (div |c_ULTIMATE.start_mp_add_~a1~0#1| 256)) .cse13 .cse14) (<= |c_ULTIMATE.start_mp_add_~a1~0#1| 255) (= .cse1 |c_ULTIMATE.start_mp_add_~a1~0#1|) (<= (div |c_ULTIMATE.start_mp_add_~a3~0#1| 256) 0) (= |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_mp_add_~a0~0#1|) (<= .cse0 0) (or .cse13 .cse14) (<= (+ (* 65536 (div |c_ULTIMATE.start_mp_add_~a2~0#1| 256)) |c_ULTIMATE.start_mp_add_~a1~0#1|) (+ 255 (* 65536 |c_ULTIMATE.start_mp_add_~a3~0#1|) (* 256 |c_ULTIMATE.start_mp_add_~a2~0#1|))) (= (div .cse12 65536) |c_ULTIMATE.start_mp_add_~b2~0#1|) (<= .cse11 0) (= (div .cse12 16777216) |c_ULTIMATE.start_mp_add_~b3~0#1|) (<= 0 |c_ULTIMATE.start_mp_add_~a3~0#1|) (= |c_ULTIMATE.start_mp_add_~b0~0#1| |c_ULTIMATE.start_main_~b~0#1|))))) is different from false [2024-11-13 15:49:16,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:50:01,567 WARN L286 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 122 DAG size of output: 87 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:50:36,865 WARN L286 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 113 DAG size of output: 78 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)