./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:03,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:03,764 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:03,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:03,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:03,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:03,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:03,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:03,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:03,796 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:03,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:03,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:03,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:03,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:03,798 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:03,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:03,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:03,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:03,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:03,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:03,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:03,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:03,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:03,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:03,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:03,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:03,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:03,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:03,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:03,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:03,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:03,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:03,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:03,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:03,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:03,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:03,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:03,804 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2024-11-18 14:37:04,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:04,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:04,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:04,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:04,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:04,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:05,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:05,476 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:05,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:05,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1598e11a5/dbb62d715c404d14a81c4f1ce78b47ef/FLAGf00b5952a [2024-11-18 14:37:05,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1598e11a5/dbb62d715c404d14a81c4f1ce78b47ef [2024-11-18 14:37:05,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:05,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:05,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:05,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:05,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:05,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:05" (1/1) ... [2024-11-18 14:37:05,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73860898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:05, skipping insertion in model container [2024-11-18 14:37:05,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:05" (1/1) ... [2024-11-18 14:37:05,907 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:06,138 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-11-18 14:37:06,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:06,149 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:06,204 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-11-18 14:37:06,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:06,230 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:06,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06 WrapperNode [2024-11-18 14:37:06,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:06,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:06,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:06,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:06,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,279 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 510 [2024-11-18 14:37:06,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:06,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:06,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:06,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:06,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,308 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]. [2024-11-18 14:37:06,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:06,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:06,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:06,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:06,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:06,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:37:06,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:37:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-18 14:37:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-18 14:37:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-18 14:37:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-18 14:37:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-18 14:37:06,416 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-18 14:37:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-18 14:37:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-18 14:37:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-18 14:37:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-18 14:37:06,516 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:06,518 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:07,064 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:07,064 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:07,082 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:07,083 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:37:07,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:07 BoogieIcfgContainer [2024-11-18 14:37:07,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:07,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:07,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:07,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:07,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:05" (1/3) ... [2024-11-18 14:37:07,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32615325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:07, skipping insertion in model container [2024-11-18 14:37:07,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (2/3) ... [2024-11-18 14:37:07,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32615325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:07, skipping insertion in model container [2024-11-18 14:37:07,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:07" (3/3) ... [2024-11-18 14:37:07,092 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:07,105 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:07,105 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:07,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:07,174 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;@3ae43c78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:07,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 141 states have (on average 1.553191489361702) internal successors, (219), 142 states have internal predecessors, (219), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 14:37:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:07,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:07,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1494571229, now seen corresponding path program 1 times [2024-11-18 14:37:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477208078] [2024-11-18 14:37:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:07,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477208078] [2024-11-18 14:37:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477208078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:37:07,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019616646] [2024-11-18 14:37:07,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:37:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:37:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:07,463 INFO L87 Difference]: Start difference. First operand has 181 states, 141 states have (on average 1.553191489361702) internal successors, (219), 142 states have internal predecessors, (219), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,508 INFO L93 Difference]: Finished difference Result 346 states and 562 transitions. [2024-11-18 14:37:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:37:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,519 INFO L225 Difference]: With dead ends: 346 [2024-11-18 14:37:07,519 INFO L226 Difference]: Without dead ends: 177 [2024-11-18 14:37:07,523 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 [2024-11-18 14:37:07,525 INFO L432 NwaCegarLoop]: 278 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, 278 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 [2024-11-18 14:37:07,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-18 14:37:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-18 14:37:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.536231884057971) internal successors, (212), 138 states have internal predecessors, (212), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 14:37:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 274 transitions. [2024-11-18 14:37:07,577 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 274 transitions. Word has length 28 [2024-11-18 14:37:07,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,577 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 274 transitions. [2024-11-18 14:37:07,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 274 transitions. [2024-11-18 14:37:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:07,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,580 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:07,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:07,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1713425947, now seen corresponding path program 1 times [2024-11-18 14:37:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729494464] [2024-11-18 14:37:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729494464] [2024-11-18 14:37:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729494464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515985379] [2024-11-18 14:37:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:07,827 INFO L87 Difference]: Start difference. First operand 177 states and 274 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,944 INFO L93 Difference]: Finished difference Result 453 states and 709 transitions. [2024-11-18 14:37:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,949 INFO L225 Difference]: With dead ends: 453 [2024-11-18 14:37:07,949 INFO L226 Difference]: Without dead ends: 290 [2024-11-18 14:37:07,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:07,954 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 134 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:07,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1317 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-18 14:37:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 177. [2024-11-18 14:37:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.4492753623188406) internal successors, (200), 138 states have internal predecessors, (200), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 14:37:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 262 transitions. [2024-11-18 14:37:07,985 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 262 transitions. Word has length 28 [2024-11-18 14:37:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,986 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 262 transitions. [2024-11-18 14:37:07,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 262 transitions. [2024-11-18 14:37:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 14:37:07,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:07,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:07,988 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1150379712, now seen corresponding path program 1 times [2024-11-18 14:37:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854890925] [2024-11-18 14:37:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854890925] [2024-11-18 14:37:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854890925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436801979] [2024-11-18 14:37:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,256 INFO L87 Difference]: Start difference. First operand 177 states and 262 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,303 INFO L93 Difference]: Finished difference Result 341 states and 514 transitions. [2024-11-18 14:37:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-18 14:37:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,306 INFO L225 Difference]: With dead ends: 341 [2024-11-18 14:37:08,306 INFO L226 Difference]: Without dead ends: 181 [2024-11-18 14:37:08,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:08,307 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 3 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 758 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-18 14:37:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-18 14:37:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.4397163120567376) internal successors, (203), 141 states have internal predecessors, (203), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 14:37:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 265 transitions. [2024-11-18 14:37:08,319 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 265 transitions. Word has length 39 [2024-11-18 14:37:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,319 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 265 transitions. [2024-11-18 14:37:08,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 265 transitions. [2024-11-18 14:37:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:37:08,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,321 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:08,321 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash -536779374, now seen corresponding path program 1 times [2024-11-18 14:37:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724408634] [2024-11-18 14:37:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724408634] [2024-11-18 14:37:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724408634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088296603] [2024-11-18 14:37:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:08,411 INFO L87 Difference]: Start difference. First operand 181 states and 265 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,448 INFO L93 Difference]: Finished difference Result 497 states and 738 transitions. [2024-11-18 14:37:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-18 14:37:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,451 INFO L225 Difference]: With dead ends: 497 [2024-11-18 14:37:08,451 INFO L226 Difference]: Without dead ends: 333 [2024-11-18 14:37:08,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:08,455 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 213 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 525 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-18 14:37:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 327. [2024-11-18 14:37:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 250 states have (on average 1.46) internal successors, (365), 251 states have internal predecessors, (365), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 14:37:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 485 transitions. [2024-11-18 14:37:08,484 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 485 transitions. Word has length 55 [2024-11-18 14:37:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,485 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 485 transitions. [2024-11-18 14:37:08,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 485 transitions. [2024-11-18 14:37:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:08,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:08,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1864543556, now seen corresponding path program 1 times [2024-11-18 14:37:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712011426] [2024-11-18 14:37:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712011426] [2024-11-18 14:37:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712011426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003956605] [2024-11-18 14:37:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:08,556 INFO L87 Difference]: Start difference. First operand 327 states and 485 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,612 INFO L93 Difference]: Finished difference Result 920 states and 1376 transitions. [2024-11-18 14:37:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,619 INFO L225 Difference]: With dead ends: 920 [2024-11-18 14:37:08,621 INFO L226 Difference]: Without dead ends: 610 [2024-11-18 14:37:08,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:08,623 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 215 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 547 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-18 14:37:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 604. [2024-11-18 14:37:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 455 states have (on average 1.4703296703296704) internal successors, (669), 458 states have internal predecessors, (669), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 903 transitions. [2024-11-18 14:37:08,657 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 903 transitions. Word has length 56 [2024-11-18 14:37:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,657 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 903 transitions. [2024-11-18 14:37:08,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 903 transitions. [2024-11-18 14:37:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:08,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:08,663 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1150560062, now seen corresponding path program 1 times [2024-11-18 14:37:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525685909] [2024-11-18 14:37:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525685909] [2024-11-18 14:37:08,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525685909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346698008] [2024-11-18 14:37:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:08,787 INFO L87 Difference]: Start difference. First operand 604 states and 903 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,939 INFO L93 Difference]: Finished difference Result 1295 states and 1932 transitions. [2024-11-18 14:37:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:08,939 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,946 INFO L225 Difference]: With dead ends: 1295 [2024-11-18 14:37:08,946 INFO L226 Difference]: Without dead ends: 708 [2024-11-18 14:37:08,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:08,951 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 369 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 672 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-18 14:37:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 692. [2024-11-18 14:37:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 530 states have (on average 1.4547169811320755) internal successors, (771), 533 states have internal predecessors, (771), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1019 transitions. [2024-11-18 14:37:08,991 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1019 transitions. Word has length 56 [2024-11-18 14:37:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,992 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1019 transitions. [2024-11-18 14:37:08,992 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1019 transitions. [2024-11-18 14:37:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:08,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,994 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:37:08,994 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 984808241, now seen corresponding path program 1 times [2024-11-18 14:37:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162307089] [2024-11-18 14:37:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162307089] [2024-11-18 14:37:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162307089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:09,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868756268] [2024-11-18 14:37:09,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:09,122 INFO L87 Difference]: Start difference. First operand 692 states and 1019 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,287 INFO L93 Difference]: Finished difference Result 1299 states and 1932 transitions. [2024-11-18 14:37:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-18 14:37:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,292 INFO L225 Difference]: With dead ends: 1299 [2024-11-18 14:37:09,292 INFO L226 Difference]: Without dead ends: 712 [2024-11-18 14:37:09,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:09,294 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 369 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 672 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-18 14:37:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 700. [2024-11-18 14:37:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 538 states have (on average 1.4479553903345725) internal successors, (779), 541 states have internal predecessors, (779), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1027 transitions. [2024-11-18 14:37:09,331 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1027 transitions. Word has length 57 [2024-11-18 14:37:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,331 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1027 transitions. [2024-11-18 14:37:09,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1027 transitions. [2024-11-18 14:37:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:37:09,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,333 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:09,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 461948067, now seen corresponding path program 1 times [2024-11-18 14:37:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889925894] [2024-11-18 14:37:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889925894] [2024-11-18 14:37:09,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889925894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11552461] [2024-11-18 14:37:09,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,421 INFO L87 Difference]: Start difference. First operand 700 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,531 INFO L93 Difference]: Finished difference Result 1287 states and 1912 transitions. [2024-11-18 14:37:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-18 14:37:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,535 INFO L225 Difference]: With dead ends: 1287 [2024-11-18 14:37:09,535 INFO L226 Difference]: Without dead ends: 700 [2024-11-18 14:37:09,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:09,537 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 61 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 666 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:09,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-18 14:37:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2024-11-18 14:37:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 538 states have (on average 1.4405204460966543) internal successors, (775), 541 states have internal predecessors, (775), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1023 transitions. [2024-11-18 14:37:09,565 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1023 transitions. Word has length 59 [2024-11-18 14:37:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,565 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1023 transitions. [2024-11-18 14:37:09,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1023 transitions. [2024-11-18 14:37:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:37:09,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,566 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:09,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1405034612, now seen corresponding path program 1 times [2024-11-18 14:37:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061345849] [2024-11-18 14:37:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061345849] [2024-11-18 14:37:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061345849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372758641] [2024-11-18 14:37:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,710 INFO L87 Difference]: Start difference. First operand 700 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,764 INFO L93 Difference]: Finished difference Result 1307 states and 1936 transitions. [2024-11-18 14:37:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-18 14:37:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,768 INFO L225 Difference]: With dead ends: 1307 [2024-11-18 14:37:09,768 INFO L226 Difference]: Without dead ends: 720 [2024-11-18 14:37:09,770 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 [2024-11-18 14:37:09,772 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 4 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 770 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-18 14:37:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-11-18 14:37:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 554 states have (on average 1.4277978339350181) internal successors, (791), 557 states have internal predecessors, (791), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1039 transitions. [2024-11-18 14:37:09,806 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1039 transitions. Word has length 60 [2024-11-18 14:37:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,806 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1039 transitions. [2024-11-18 14:37:09,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1039 transitions. [2024-11-18 14:37:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:37:09,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:09,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash -829990638, now seen corresponding path program 1 times [2024-11-18 14:37:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114018989] [2024-11-18 14:37:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114018989] [2024-11-18 14:37:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114018989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852932347] [2024-11-18 14:37:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,973 INFO L87 Difference]: Start difference. First operand 720 states and 1039 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,043 INFO L93 Difference]: Finished difference Result 1347 states and 1980 transitions. [2024-11-18 14:37:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-18 14:37:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,048 INFO L225 Difference]: With dead ends: 1347 [2024-11-18 14:37:10,048 INFO L226 Difference]: Without dead ends: 740 [2024-11-18 14:37:10,050 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 [2024-11-18 14:37:10,051 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 4 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-18 14:37:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2024-11-18 14:37:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 570 states have (on average 1.4157894736842105) internal successors, (807), 573 states have internal predecessors, (807), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1055 transitions. [2024-11-18 14:37:10,094 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1055 transitions. Word has length 68 [2024-11-18 14:37:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,094 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1055 transitions. [2024-11-18 14:37:10,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1055 transitions. [2024-11-18 14:37:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:10,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,096 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:10,097 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash 102970172, now seen corresponding path program 1 times [2024-11-18 14:37:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130289961] [2024-11-18 14:37:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130289961] [2024-11-18 14:37:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130289961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466528400] [2024-11-18 14:37:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,218 INFO L87 Difference]: Start difference. First operand 740 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,267 INFO L93 Difference]: Finished difference Result 1383 states and 1996 transitions. [2024-11-18 14:37:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,273 INFO L225 Difference]: With dead ends: 1383 [2024-11-18 14:37:10,273 INFO L226 Difference]: Without dead ends: 756 [2024-11-18 14:37:10,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:10,275 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 766 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-18 14:37:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-11-18 14:37:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 582 states have (on average 1.407216494845361) internal successors, (819), 585 states have internal predecessors, (819), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1067 transitions. [2024-11-18 14:37:10,307 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1067 transitions. Word has length 76 [2024-11-18 14:37:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,308 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1067 transitions. [2024-11-18 14:37:10,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1067 transitions. [2024-11-18 14:37:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:10,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:10,311 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1795537821, now seen corresponding path program 1 times [2024-11-18 14:37:10,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900157399] [2024-11-18 14:37:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900157399] [2024-11-18 14:37:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900157399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605488008] [2024-11-18 14:37:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,466 INFO L87 Difference]: Start difference. First operand 756 states and 1067 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,533 INFO L93 Difference]: Finished difference Result 1419 states and 2036 transitions. [2024-11-18 14:37:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,538 INFO L225 Difference]: With dead ends: 1419 [2024-11-18 14:37:10,538 INFO L226 Difference]: Without dead ends: 776 [2024-11-18 14:37:10,540 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 [2024-11-18 14:37:10,541 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 4 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-18 14:37:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2024-11-18 14:37:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 598 states have (on average 1.3963210702341138) internal successors, (835), 601 states have internal predecessors, (835), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1083 transitions. [2024-11-18 14:37:10,577 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1083 transitions. Word has length 76 [2024-11-18 14:37:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,578 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 1083 transitions. [2024-11-18 14:37:10,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1083 transitions. [2024-11-18 14:37:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:37:10,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,579 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:10,580 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1351818595, now seen corresponding path program 1 times [2024-11-18 14:37:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140260426] [2024-11-18 14:37:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:10,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140260426] [2024-11-18 14:37:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140260426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771369491] [2024-11-18 14:37:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,751 INFO L87 Difference]: Start difference. First operand 776 states and 1083 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,803 INFO L93 Difference]: Finished difference Result 1463 states and 2064 transitions. [2024-11-18 14:37:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-18 14:37:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,807 INFO L225 Difference]: With dead ends: 1463 [2024-11-18 14:37:10,808 INFO L226 Difference]: Without dead ends: 800 [2024-11-18 14:37:10,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:10,810 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 768 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-18 14:37:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2024-11-18 14:37:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 618 states have (on average 1.383495145631068) internal successors, (855), 621 states have internal predecessors, (855), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-18 14:37:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1103 transitions. [2024-11-18 14:37:10,841 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1103 transitions. Word has length 84 [2024-11-18 14:37:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,841 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1103 transitions. [2024-11-18 14:37:10,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1103 transitions. [2024-11-18 14:37:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:37:10,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,843 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:10,843 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 938140804, now seen corresponding path program 1 times [2024-11-18 14:37:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028063223] [2024-11-18 14:37:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028063223] [2024-11-18 14:37:11,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028063223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661716498] [2024-11-18 14:37:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:11,304 INFO L87 Difference]: Start difference. First operand 800 states and 1103 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,545 INFO L93 Difference]: Finished difference Result 2059 states and 2829 transitions. [2024-11-18 14:37:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-18 14:37:11,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,552 INFO L225 Difference]: With dead ends: 2059 [2024-11-18 14:37:11,552 INFO L226 Difference]: Without dead ends: 1372 [2024-11-18 14:37:11,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:11,555 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 197 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1482 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-18 14:37:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1084. [2024-11-18 14:37:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 829 states have (on average 1.3715319662243668) internal successors, (1137), 834 states have internal predecessors, (1137), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-18 14:37:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1481 transitions. [2024-11-18 14:37:11,619 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1481 transitions. Word has length 87 [2024-11-18 14:37:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,619 INFO L471 AbstractCegarLoop]: Abstraction has 1084 states and 1481 transitions. [2024-11-18 14:37:11,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1481 transitions. [2024-11-18 14:37:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 14:37:11,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:11,621 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,623 INFO L85 PathProgramCache]: Analyzing trace with hash -262931398, now seen corresponding path program 1 times [2024-11-18 14:37:11,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78527432] [2024-11-18 14:37:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:11,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78527432] [2024-11-18 14:37:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78527432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600953999] [2024-11-18 14:37:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,789 INFO L87 Difference]: Start difference. First operand 1084 states and 1481 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,866 INFO L93 Difference]: Finished difference Result 2011 states and 2772 transitions. [2024-11-18 14:37:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-18 14:37:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,872 INFO L225 Difference]: With dead ends: 2011 [2024-11-18 14:37:11,873 INFO L226 Difference]: Without dead ends: 1108 [2024-11-18 14:37:11,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:11,876 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 766 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-18 14:37:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2024-11-18 14:37:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 847 states have (on average 1.3636363636363635) internal successors, (1155), 852 states have internal predecessors, (1155), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-18 14:37:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1499 transitions. [2024-11-18 14:37:11,932 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1499 transitions. Word has length 91 [2024-11-18 14:37:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,932 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1499 transitions. [2024-11-18 14:37:11,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1499 transitions. [2024-11-18 14:37:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 14:37:11,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,934 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:11,934 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1171844932, now seen corresponding path program 1 times [2024-11-18 14:37:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975794047] [2024-11-18 14:37:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975794047] [2024-11-18 14:37:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975794047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221908836] [2024-11-18 14:37:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:12,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:12,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:37:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:37:12,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:12,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221908836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:12,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-18 14:37:12,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146267732] [2024-11-18 14:37:12,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:12,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:37:12,471 INFO L87 Difference]: Start difference. First operand 1108 states and 1499 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,643 INFO L93 Difference]: Finished difference Result 2377 states and 3341 transitions. [2024-11-18 14:37:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:37:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-18 14:37:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,651 INFO L225 Difference]: With dead ends: 2377 [2024-11-18 14:37:12,652 INFO L226 Difference]: Without dead ends: 1538 [2024-11-18 14:37:12,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:12,654 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 140 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2879 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-18 14:37:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1116. [2024-11-18 14:37:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 851 states have (on average 1.354876615746181) internal successors, (1153), 858 states have internal predecessors, (1153), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-18 14:37:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1501 transitions. [2024-11-18 14:37:12,723 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1501 transitions. Word has length 90 [2024-11-18 14:37:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,723 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1501 transitions. [2024-11-18 14:37:12,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1501 transitions. [2024-11-18 14:37:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:37:12,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,725 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:37:12,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:37:12,929 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1049695796, now seen corresponding path program 1 times [2024-11-18 14:37:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703956826] [2024-11-18 14:37:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:37:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703956826] [2024-11-18 14:37:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703956826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126340486] [2024-11-18 14:37:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:13,039 INFO L87 Difference]: Start difference. First operand 1116 states and 1501 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,219 INFO L93 Difference]: Finished difference Result 2016 states and 2722 transitions. [2024-11-18 14:37:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-18 14:37:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,225 INFO L225 Difference]: With dead ends: 2016 [2024-11-18 14:37:13,225 INFO L226 Difference]: Without dead ends: 1163 [2024-11-18 14:37:13,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:13,227 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 256 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1491 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-18 14:37:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1121. [2024-11-18 14:37:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 867 states have (on average 1.3471741637831602) internal successors, (1168), 879 states have internal predecessors, (1168), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-18 14:37:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1492 transitions. [2024-11-18 14:37:13,283 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1492 transitions. Word has length 93 [2024-11-18 14:37:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,284 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1492 transitions. [2024-11-18 14:37:13,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1492 transitions. [2024-11-18 14:37:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:37:13,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:37:13,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 82901354, now seen corresponding path program 1 times [2024-11-18 14:37:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007732308] [2024-11-18 14:37:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007732308] [2024-11-18 14:37:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007732308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387819081] [2024-11-18 14:37:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:13,688 INFO L87 Difference]: Start difference. First operand 1121 states and 1492 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,870 INFO L93 Difference]: Finished difference Result 1997 states and 2669 transitions. [2024-11-18 14:37:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:13,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-18 14:37:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,875 INFO L225 Difference]: With dead ends: 1997 [2024-11-18 14:37:13,875 INFO L226 Difference]: Without dead ends: 1119 [2024-11-18 14:37:13,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:13,878 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 151 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1607 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-18 14:37:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1011. [2024-11-18 14:37:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 784 states have (on average 1.3494897959183674) internal successors, (1058), 794 states have internal predecessors, (1058), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-18 14:37:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1348 transitions. [2024-11-18 14:37:13,927 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1348 transitions. Word has length 95 [2024-11-18 14:37:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,927 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1348 transitions. [2024-11-18 14:37:13,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1348 transitions. [2024-11-18 14:37:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:37:13,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,928 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:37:13,929 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -914641030, now seen corresponding path program 1 times [2024-11-18 14:37:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893526943] [2024-11-18 14:37:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893526943] [2024-11-18 14:37:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893526943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610397769] [2024-11-18 14:37:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:14,383 INFO L87 Difference]: Start difference. First operand 1011 states and 1348 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:14,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,690 INFO L93 Difference]: Finished difference Result 1929 states and 2557 transitions. [2024-11-18 14:37:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:14,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-18 14:37:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,695 INFO L225 Difference]: With dead ends: 1929 [2024-11-18 14:37:14,696 INFO L226 Difference]: Without dead ends: 1081 [2024-11-18 14:37:14,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:14,698 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 411 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1271 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2024-11-18 14:37:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1027. [2024-11-18 14:37:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 792 states have (on average 1.327020202020202) internal successors, (1051), 803 states have internal predecessors, (1051), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 14:37:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1347 transitions. [2024-11-18 14:37:14,755 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1347 transitions. Word has length 96 [2024-11-18 14:37:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,755 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1347 transitions. [2024-11-18 14:37:14,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1347 transitions. [2024-11-18 14:37:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:37:14,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:37:14,757 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1010886925, now seen corresponding path program 1 times [2024-11-18 14:37:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60523624] [2024-11-18 14:37:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:14,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60523624] [2024-11-18 14:37:14,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60523624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760186298] [2024-11-18 14:37:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:14,842 INFO L87 Difference]: Start difference. First operand 1027 states and 1347 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,978 INFO L93 Difference]: Finished difference Result 2702 states and 3567 transitions. [2024-11-18 14:37:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-18 14:37:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,986 INFO L225 Difference]: With dead ends: 2702 [2024-11-18 14:37:14,987 INFO L226 Difference]: Without dead ends: 1889 [2024-11-18 14:37:14,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:14,989 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 202 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1154 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-11-18 14:37:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1772. [2024-11-18 14:37:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1347 states have (on average 1.3199703043801039) internal successors, (1778), 1366 states have internal predecessors, (1778), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-18 14:37:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2322 transitions. [2024-11-18 14:37:15,104 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2322 transitions. Word has length 97 [2024-11-18 14:37:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,104 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2322 transitions. [2024-11-18 14:37:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2322 transitions. [2024-11-18 14:37:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:37:15,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:15,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:37:15,106 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1421619842, now seen corresponding path program 1 times [2024-11-18 14:37:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172903958] [2024-11-18 14:37:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172903958] [2024-11-18 14:37:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172903958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886408225] [2024-11-18 14:37:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:15,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:15,495 INFO L87 Difference]: Start difference. First operand 1772 states and 2322 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,913 INFO L93 Difference]: Finished difference Result 3445 states and 4513 transitions. [2024-11-18 14:37:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-18 14:37:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,922 INFO L225 Difference]: With dead ends: 3445 [2024-11-18 14:37:15,922 INFO L226 Difference]: Without dead ends: 1969 [2024-11-18 14:37:15,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:15,926 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 523 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1436 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-18 14:37:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1797. [2024-11-18 14:37:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1359 states have (on average 1.3142016188373804) internal successors, (1786), 1379 states have internal predecessors, (1786), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-18 14:37:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2346 transitions. [2024-11-18 14:37:16,086 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2346 transitions. Word has length 99 [2024-11-18 14:37:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,086 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2346 transitions. [2024-11-18 14:37:16,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2346 transitions. [2024-11-18 14:37:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:16,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:16,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:37:16,088 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash 506581735, now seen corresponding path program 1 times [2024-11-18 14:37:16,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034225098] [2024-11-18 14:37:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034225098] [2024-11-18 14:37:16,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034225098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320462321] [2024-11-18 14:37:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:16,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:16,159 INFO L87 Difference]: Start difference. First operand 1797 states and 2346 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,416 INFO L93 Difference]: Finished difference Result 4559 states and 5986 transitions. [2024-11-18 14:37:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,429 INFO L225 Difference]: With dead ends: 4559 [2024-11-18 14:37:16,429 INFO L226 Difference]: Without dead ends: 3099 [2024-11-18 14:37:16,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:16,433 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 208 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-11-18 14:37:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2818. [2024-11-18 14:37:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2105 states have (on average 1.3049881235154395) internal successors, (2747), 2136 states have internal predecessors, (2747), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-18 14:37:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3667 transitions. [2024-11-18 14:37:16,721 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3667 transitions. Word has length 101 [2024-11-18 14:37:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,722 INFO L471 AbstractCegarLoop]: Abstraction has 2818 states and 3667 transitions. [2024-11-18 14:37:16,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3667 transitions. [2024-11-18 14:37:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:16,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,724 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:16,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:37:16,724 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1826960265, now seen corresponding path program 1 times [2024-11-18 14:37:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010230883] [2024-11-18 14:37:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010230883] [2024-11-18 14:37:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010230883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103701711] [2024-11-18 14:37:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:16,801 INFO L87 Difference]: Start difference. First operand 2818 states and 3667 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,101 INFO L93 Difference]: Finished difference Result 6581 states and 8604 transitions. [2024-11-18 14:37:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:17,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:17,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,118 INFO L225 Difference]: With dead ends: 6581 [2024-11-18 14:37:17,119 INFO L226 Difference]: Without dead ends: 4220 [2024-11-18 14:37:17,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:17,124 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 201 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1206 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2024-11-18 14:37:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4035. [2024-11-18 14:37:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 2998 states have (on average 1.301200800533689) internal successors, (3901), 3042 states have internal predecessors, (3901), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-18 14:37:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5245 transitions. [2024-11-18 14:37:17,429 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5245 transitions. Word has length 101 [2024-11-18 14:37:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,430 INFO L471 AbstractCegarLoop]: Abstraction has 4035 states and 5245 transitions. [2024-11-18 14:37:17,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5245 transitions. [2024-11-18 14:37:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:37:17,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:17,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:37:17,433 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1131002330, now seen corresponding path program 1 times [2024-11-18 14:37:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100367344] [2024-11-18 14:37:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100367344] [2024-11-18 14:37:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100367344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835455596] [2024-11-18 14:37:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:17,483 INFO L87 Difference]: Start difference. First operand 4035 states and 5245 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,745 INFO L93 Difference]: Finished difference Result 7749 states and 10121 transitions. [2024-11-18 14:37:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-18 14:37:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,765 INFO L225 Difference]: With dead ends: 7749 [2024-11-18 14:37:17,766 INFO L226 Difference]: Without dead ends: 4068 [2024-11-18 14:37:17,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:17,775 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 489 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2024-11-18 14:37:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4041. [2024-11-18 14:37:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 3004 states have (on average 1.3005992010652463) internal successors, (3907), 3048 states have internal predecessors, (3907), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-18 14:37:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5251 transitions. [2024-11-18 14:37:18,076 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5251 transitions. Word has length 102 [2024-11-18 14:37:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,076 INFO L471 AbstractCegarLoop]: Abstraction has 4041 states and 5251 transitions. [2024-11-18 14:37:18,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5251 transitions. [2024-11-18 14:37:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 14:37:18,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:18,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:37:18,079 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1347241870, now seen corresponding path program 1 times [2024-11-18 14:37:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171673475] [2024-11-18 14:37:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171673475] [2024-11-18 14:37:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171673475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753470302] [2024-11-18 14:37:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:18,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:18,172 INFO L87 Difference]: Start difference. First operand 4041 states and 5251 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,494 INFO L93 Difference]: Finished difference Result 7714 states and 10048 transitions. [2024-11-18 14:37:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-18 14:37:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,517 INFO L225 Difference]: With dead ends: 7714 [2024-11-18 14:37:18,517 INFO L226 Difference]: Without dead ends: 3749 [2024-11-18 14:37:18,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:18,531 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 83 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 749 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2024-11-18 14:37:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3686. [2024-11-18 14:37:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2732 states have (on average 1.3100292825768667) internal successors, (3579), 2766 states have internal predecessors, (3579), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-18 14:37:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4819 transitions. [2024-11-18 14:37:18,960 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4819 transitions. Word has length 103 [2024-11-18 14:37:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,960 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 4819 transitions. [2024-11-18 14:37:18,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4819 transitions. [2024-11-18 14:37:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:18,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,962 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:18,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:37:18,963 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2076713750, now seen corresponding path program 1 times [2024-11-18 14:37:18,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141450631] [2024-11-18 14:37:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141450631] [2024-11-18 14:37:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141450631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069896335] [2024-11-18 14:37:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:19,020 INFO L87 Difference]: Start difference. First operand 3686 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:19,252 INFO L93 Difference]: Finished difference Result 7242 states and 9508 transitions. [2024-11-18 14:37:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:19,272 INFO L225 Difference]: With dead ends: 7242 [2024-11-18 14:37:19,273 INFO L226 Difference]: Without dead ends: 3737 [2024-11-18 14:37:19,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:19,282 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:19,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 489 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2024-11-18 14:37:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3696. [2024-11-18 14:37:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2742 states have (on average 1.3088986141502552) internal successors, (3589), 2776 states have internal predecessors, (3589), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-18 14:37:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 4829 transitions. [2024-11-18 14:37:19,540 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 4829 transitions. Word has length 104 [2024-11-18 14:37:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:19,540 INFO L471 AbstractCegarLoop]: Abstraction has 3696 states and 4829 transitions. [2024-11-18 14:37:19,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 4829 transitions. [2024-11-18 14:37:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:19,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:19,542 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:19,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 14:37:19,542 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:19,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2022352177, now seen corresponding path program 1 times [2024-11-18 14:37:19,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:19,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738931053] [2024-11-18 14:37:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738931053] [2024-11-18 14:37:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738931053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:19,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642912659] [2024-11-18 14:37:19,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:19,643 INFO L87 Difference]: Start difference. First operand 3696 states and 4829 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:19,835 INFO L93 Difference]: Finished difference Result 7193 states and 9419 transitions. [2024-11-18 14:37:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:19,851 INFO L225 Difference]: With dead ends: 7193 [2024-11-18 14:37:19,851 INFO L226 Difference]: Without dead ends: 3616 [2024-11-18 14:37:19,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:19,860 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 64 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:19,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 759 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-11-18 14:37:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2785. [2024-11-18 14:37:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2065 states have (on average 1.3036319612590799) internal successors, (2692), 2084 states have internal predecessors, (2692), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-18 14:37:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3630 transitions. [2024-11-18 14:37:20,147 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3630 transitions. Word has length 104 [2024-11-18 14:37:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:20,148 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 3630 transitions. [2024-11-18 14:37:20,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3630 transitions. [2024-11-18 14:37:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:37:20,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:20,154 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:20,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:37:20,154 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:20,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1445089110, now seen corresponding path program 1 times [2024-11-18 14:37:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:20,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109539168] [2024-11-18 14:37:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109539168] [2024-11-18 14:37:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109539168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:20,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550768676] [2024-11-18 14:37:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:20,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:20,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:37:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:37:20,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:37:20,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550768676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:20,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:37:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371364568] [2024-11-18 14:37:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:20,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:20,958 INFO L87 Difference]: Start difference. First operand 2785 states and 3630 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:21,165 INFO L93 Difference]: Finished difference Result 5240 states and 6871 transitions. [2024-11-18 14:37:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 154 [2024-11-18 14:37:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:21,177 INFO L225 Difference]: With dead ends: 5240 [2024-11-18 14:37:21,177 INFO L226 Difference]: Without dead ends: 2614 [2024-11-18 14:37:21,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:21,182 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:21,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1024 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-18 14:37:21,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2598. [2024-11-18 14:37:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 1923 states have (on average 1.3000520020800832) internal successors, (2500), 1940 states have internal predecessors, (2500), 440 states have call successors, (440), 234 states have call predecessors, (440), 234 states have return successors, (440), 423 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-18 14:37:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3380 transitions. [2024-11-18 14:37:21,363 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3380 transitions. Word has length 154 [2024-11-18 14:37:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:21,363 INFO L471 AbstractCegarLoop]: Abstraction has 2598 states and 3380 transitions. [2024-11-18 14:37:21,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3380 transitions. [2024-11-18 14:37:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:37:21,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:21,367 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:21,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:37:21,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-18 14:37:21,568 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:21,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1661978996, now seen corresponding path program 1 times [2024-11-18 14:37:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318877036] [2024-11-18 14:37:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318877036] [2024-11-18 14:37:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318877036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608634968] [2024-11-18 14:37:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:22,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:22,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:22,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:37:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:22,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:22,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:22,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608634968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:22,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-18 14:37:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131445186] [2024-11-18 14:37:22,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:22,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:37:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:37:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:37:23,000 INFO L87 Difference]: Start difference. First operand 2598 states and 3380 transitions. Second operand has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-18 14:37:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:27,056 INFO L93 Difference]: Finished difference Result 7590 states and 9908 transitions. [2024-11-18 14:37:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-18 14:37:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 156 [2024-11-18 14:37:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:27,082 INFO L225 Difference]: With dead ends: 7590 [2024-11-18 14:37:27,082 INFO L226 Difference]: Without dead ends: 5234 [2024-11-18 14:37:27,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1040, Invalid=6100, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 14:37:27,092 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 3014 mSDsluCounter, 6314 mSDsCounter, 0 mSdLazyCounter, 3164 mSolverCounterSat, 1087 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 3164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:27,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 6966 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 3164 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 14:37:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2024-11-18 14:37:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 4543. [2024-11-18 14:37:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 3363 states have (on average 1.303895331549212) internal successors, (4385), 3392 states have internal predecessors, (4385), 765 states have call successors, (765), 414 states have call predecessors, (765), 414 states have return successors, (765), 736 states have call predecessors, (765), 765 states have call successors, (765) [2024-11-18 14:37:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 5915 transitions. [2024-11-18 14:37:27,516 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 5915 transitions. Word has length 156 [2024-11-18 14:37:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:27,517 INFO L471 AbstractCegarLoop]: Abstraction has 4543 states and 5915 transitions. [2024-11-18 14:37:27,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-18 14:37:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 5915 transitions. [2024-11-18 14:37:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:37:27,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:27,523 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:27,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:37:27,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 14:37:27,727 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:27,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash -554573914, now seen corresponding path program 1 times [2024-11-18 14:37:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571145580] [2024-11-18 14:37:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:28,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571145580] [2024-11-18 14:37:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571145580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265592306] [2024-11-18 14:37:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:28,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:28,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:37:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:28,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 14:37:28,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:28,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265592306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:29,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2024-11-18 14:37:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006758122] [2024-11-18 14:37:29,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:29,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:37:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:37:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:29,139 INFO L87 Difference]: Start difference. First operand 4543 states and 5915 transitions. Second operand has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-18 14:37:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,124 INFO L93 Difference]: Finished difference Result 10750 states and 13983 transitions. [2024-11-18 14:37:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 14:37:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 157 [2024-11-18 14:37:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,150 INFO L225 Difference]: With dead ends: 10750 [2024-11-18 14:37:31,150 INFO L226 Difference]: Without dead ends: 6460 [2024-11-18 14:37:31,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=881, Invalid=2541, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 14:37:31,161 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 1565 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 2946 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:37:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2024-11-18 14:37:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 6130. [2024-11-18 14:37:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 4532 states have (on average 1.296116504854369) internal successors, (5874), 4572 states have internal predecessors, (5874), 1028 states have call successors, (1028), 569 states have call predecessors, (1028), 569 states have return successors, (1028), 988 states have call predecessors, (1028), 1028 states have call successors, (1028) [2024-11-18 14:37:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 7930 transitions. [2024-11-18 14:37:31,777 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 7930 transitions. Word has length 157 [2024-11-18 14:37:31,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,777 INFO L471 AbstractCegarLoop]: Abstraction has 6130 states and 7930 transitions. [2024-11-18 14:37:31,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-18 14:37:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 7930 transitions. [2024-11-18 14:37:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:37:31,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,785 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:31,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:37:31,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:31,986 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2129400353, now seen corresponding path program 1 times [2024-11-18 14:37:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895251879] [2024-11-18 14:37:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 14:37:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895251879] [2024-11-18 14:37:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895251879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:32,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:32,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527387359] [2024-11-18 14:37:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:32,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:32,140 INFO L87 Difference]: Start difference. First operand 6130 states and 7930 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:37:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,571 INFO L93 Difference]: Finished difference Result 17980 states and 23320 transitions. [2024-11-18 14:37:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 159 [2024-11-18 14:37:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,618 INFO L225 Difference]: With dead ends: 17980 [2024-11-18 14:37:33,619 INFO L226 Difference]: Without dead ends: 12155 [2024-11-18 14:37:33,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:33,635 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 224 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2584 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2024-11-18 14:37:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 8614. [2024-11-18 14:37:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 6320 states have (on average 1.2944620253164556) internal successors, (8181), 6378 states have internal predecessors, (8181), 1492 states have call successors, (1492), 801 states have call predecessors, (1492), 801 states have return successors, (1492), 1434 states have call predecessors, (1492), 1492 states have call successors, (1492) [2024-11-18 14:37:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 11165 transitions. [2024-11-18 14:37:34,523 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 11165 transitions. Word has length 159 [2024-11-18 14:37:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:34,524 INFO L471 AbstractCegarLoop]: Abstraction has 8614 states and 11165 transitions. [2024-11-18 14:37:34,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:37:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 11165 transitions. [2024-11-18 14:37:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:37:34,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:34,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:34,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 14:37:34,534 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:34,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:34,534 INFO L85 PathProgramCache]: Analyzing trace with hash 713092917, now seen corresponding path program 1 times [2024-11-18 14:37:34,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:34,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370123269] [2024-11-18 14:37:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:34,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370123269] [2024-11-18 14:37:35,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370123269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370773635] [2024-11-18 14:37:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:35,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:35,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:37:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-18 14:37:35,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:36,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:36,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370773635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:36,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:36,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 32 [2024-11-18 14:37:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060267185] [2024-11-18 14:37:36,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:36,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 14:37:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 14:37:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:37:36,780 INFO L87 Difference]: Start difference. First operand 8614 states and 11165 transitions. Second operand has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-18 14:37:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:41,661 INFO L93 Difference]: Finished difference Result 18728 states and 24263 transitions. [2024-11-18 14:37:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-18 14:37:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) Word has length 159 [2024-11-18 14:37:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:41,697 INFO L225 Difference]: With dead ends: 18728 [2024-11-18 14:37:41,697 INFO L226 Difference]: Without dead ends: 10419 [2024-11-18 14:37:41,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4423 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2006, Invalid=10876, Unknown=0, NotChecked=0, Total=12882 [2024-11-18 14:37:41,714 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 3601 mSDsluCounter, 6398 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 6954 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:41,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 6954 Invalid, 4686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 14:37:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10419 states. [2024-11-18 14:37:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10419 to 9749. [2024-11-18 14:37:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 7183 states have (on average 1.2930530419044968) internal successors, (9288), 7249 states have internal predecessors, (9288), 1664 states have call successors, (1664), 901 states have call predecessors, (1664), 901 states have return successors, (1664), 1598 states have call predecessors, (1664), 1664 states have call successors, (1664) [2024-11-18 14:37:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12616 transitions. [2024-11-18 14:37:42,895 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12616 transitions. Word has length 159 [2024-11-18 14:37:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:42,896 INFO L471 AbstractCegarLoop]: Abstraction has 9749 states and 12616 transitions. [2024-11-18 14:37:42,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-18 14:37:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12616 transitions. [2024-11-18 14:37:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:37:42,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:42,906 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:42,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:37:43,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:43,107 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:43,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2096956834, now seen corresponding path program 1 times [2024-11-18 14:37:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:43,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958147773] [2024-11-18 14:37:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:43,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958147773] [2024-11-18 14:37:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958147773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:43,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802901449] [2024-11-18 14:37:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:43,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:43,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:43,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:43,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:37:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:43,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:44,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802901449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:44,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-18 14:37:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046491539] [2024-11-18 14:37:44,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:44,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:37:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:37:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:37:44,415 INFO L87 Difference]: Start difference. First operand 9749 states and 12616 transitions. Second operand has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-18 14:37:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:46,922 INFO L93 Difference]: Finished difference Result 23933 states and 31063 transitions. [2024-11-18 14:37:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 14:37:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 160 [2024-11-18 14:37:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:46,983 INFO L225 Difference]: With dead ends: 23933 [2024-11-18 14:37:46,983 INFO L226 Difference]: Without dead ends: 14489 [2024-11-18 14:37:47,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:37:47,002 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 2596 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:47,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 3318 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:37:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14489 states. [2024-11-18 14:37:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14489 to 13631. [2024-11-18 14:37:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13631 states, 10015 states have (on average 1.2964553170244633) internal successors, (12984), 10113 states have internal predecessors, (12984), 2348 states have call successors, (2348), 1267 states have call predecessors, (2348), 1267 states have return successors, (2348), 2250 states have call predecessors, (2348), 2348 states have call successors, (2348) [2024-11-18 14:37:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13631 states to 13631 states and 17680 transitions. [2024-11-18 14:37:48,628 INFO L78 Accepts]: Start accepts. Automaton has 13631 states and 17680 transitions. Word has length 160 [2024-11-18 14:37:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:48,628 INFO L471 AbstractCegarLoop]: Abstraction has 13631 states and 17680 transitions. [2024-11-18 14:37:48,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-18 14:37:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13631 states and 17680 transitions. [2024-11-18 14:37:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:37:48,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:48,637 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:48,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:48,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:48,838 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:48,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2060618077, now seen corresponding path program 1 times [2024-11-18 14:37:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143824181] [2024-11-18 14:37:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:49,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143824181] [2024-11-18 14:37:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143824181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178350908] [2024-11-18 14:37:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:49,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:49,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:49,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:37:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:49,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 14:37:49,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:49,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178350908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:49,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2024-11-18 14:37:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26832967] [2024-11-18 14:37:49,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:49,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:37:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:37:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:37:49,980 INFO L87 Difference]: Start difference. First operand 13631 states and 17680 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-18 14:37:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:53,542 INFO L93 Difference]: Finished difference Result 33084 states and 43036 transitions. [2024-11-18 14:37:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:37:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) Word has length 161 [2024-11-18 14:37:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:53,618 INFO L225 Difference]: With dead ends: 33084 [2024-11-18 14:37:53,618 INFO L226 Difference]: Without dead ends: 19758 [2024-11-18 14:37:53,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=520, Invalid=2236, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 14:37:53,647 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 1195 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:53,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 3333 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:37:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19758 states. [2024-11-18 14:37:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19758 to 19507. [2024-11-18 14:37:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19507 states, 14385 states have (on average 1.2977407021202643) internal successors, (18668), 14520 states have internal predecessors, (18668), 3311 states have call successors, (3311), 1810 states have call predecessors, (3311), 1810 states have return successors, (3311), 3176 states have call predecessors, (3311), 3311 states have call successors, (3311) [2024-11-18 14:37:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19507 states to 19507 states and 25290 transitions. [2024-11-18 14:37:55,918 INFO L78 Accepts]: Start accepts. Automaton has 19507 states and 25290 transitions. Word has length 161 [2024-11-18 14:37:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:55,919 INFO L471 AbstractCegarLoop]: Abstraction has 19507 states and 25290 transitions. [2024-11-18 14:37:55,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-18 14:37:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19507 states and 25290 transitions. [2024-11-18 14:37:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:37:55,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:55,929 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:55,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:56,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:56,130 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2115039174, now seen corresponding path program 1 times [2024-11-18 14:37:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889403921] [2024-11-18 14:37:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 14:37:56,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889403921] [2024-11-18 14:37:56,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889403921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:56,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316818768] [2024-11-18 14:37:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:56,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:56,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:56,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:37:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:37:57,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:57,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316818768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:57,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-18 14:37:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992495510] [2024-11-18 14:37:57,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:57,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:37:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:37:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:37:57,698 INFO L87 Difference]: Start difference. First operand 19507 states and 25290 transitions. Second operand has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) [2024-11-18 14:38:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:05,548 INFO L93 Difference]: Finished difference Result 50753 states and 65553 transitions. [2024-11-18 14:38:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-18 14:38:05,549 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) Word has length 161 [2024-11-18 14:38:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:05,655 INFO L225 Difference]: With dead ends: 50753 [2024-11-18 14:38:05,655 INFO L226 Difference]: Without dead ends: 31518 [2024-11-18 14:38:05,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1532, Invalid=8568, Unknown=0, NotChecked=0, Total=10100 [2024-11-18 14:38:05,696 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 4773 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4773 SdHoareTripleChecker+Valid, 6043 SdHoareTripleChecker+Invalid, 4941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:05,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4773 Valid, 6043 Invalid, 4941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 14:38:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31518 states. [2024-11-18 14:38:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31518 to 16641. [2024-11-18 14:38:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16641 states, 12427 states have (on average 1.2946004667256779) internal successors, (16088), 12537 states have internal predecessors, (16088), 2676 states have call successors, (2676), 1537 states have call predecessors, (2676), 1537 states have return successors, (2676), 2566 states have call predecessors, (2676), 2676 states have call successors, (2676) [2024-11-18 14:38:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16641 states to 16641 states and 21440 transitions. [2024-11-18 14:38:08,260 INFO L78 Accepts]: Start accepts. Automaton has 16641 states and 21440 transitions. Word has length 161 [2024-11-18 14:38:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:08,260 INFO L471 AbstractCegarLoop]: Abstraction has 16641 states and 21440 transitions. [2024-11-18 14:38:08,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) [2024-11-18 14:38:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 16641 states and 21440 transitions. [2024-11-18 14:38:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 14:38:08,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:08,269 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:08,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:38:08,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-18 14:38:08,470 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:08,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -47883475, now seen corresponding path program 1 times [2024-11-18 14:38:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6110424] [2024-11-18 14:38:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:38:08,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6110424] [2024-11-18 14:38:08,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6110424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380003736] [2024-11-18 14:38:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:08,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:08,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:08,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:38:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:08,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 14:38:08,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:38:09,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:38:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380003736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:09,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2024-11-18 14:38:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248433773] [2024-11-18 14:38:09,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:09,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:38:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:38:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:38:09,395 INFO L87 Difference]: Start difference. First operand 16641 states and 21440 transitions. Second operand has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-18 14:38:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:12,490 INFO L93 Difference]: Finished difference Result 33455 states and 43129 transitions. [2024-11-18 14:38:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 14:38:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) Word has length 163 [2024-11-18 14:38:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:12,548 INFO L225 Difference]: With dead ends: 33455 [2024-11-18 14:38:12,548 INFO L226 Difference]: Without dead ends: 17119 [2024-11-18 14:38:12,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=434, Invalid=972, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:38:12,572 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1642 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:12,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2232 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:38:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17119 states. [2024-11-18 14:38:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17119 to 16598. [2024-11-18 14:38:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16598 states, 12380 states have (on average 1.2890953150242326) internal successors, (15959), 12490 states have internal predecessors, (15959), 2678 states have call successors, (2678), 1539 states have call predecessors, (2678), 1539 states have return successors, (2678), 2568 states have call predecessors, (2678), 2678 states have call successors, (2678) [2024-11-18 14:38:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16598 states to 16598 states and 21315 transitions. [2024-11-18 14:38:15,002 INFO L78 Accepts]: Start accepts. Automaton has 16598 states and 21315 transitions. Word has length 163 [2024-11-18 14:38:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:15,003 INFO L471 AbstractCegarLoop]: Abstraction has 16598 states and 21315 transitions. [2024-11-18 14:38:15,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-18 14:38:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 16598 states and 21315 transitions. [2024-11-18 14:38:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 14:38:15,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:15,009 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:15,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:38:15,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-18 14:38:15,210 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:15,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 622509435, now seen corresponding path program 1 times [2024-11-18 14:38:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:15,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298752807] [2024-11-18 14:38:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 14:38:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:15,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298752807] [2024-11-18 14:38:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298752807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831043268] [2024-11-18 14:38:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:15,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:15,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:15,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:38:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:15,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:38:15,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 8 proven. 88 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:38:15,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 14:38:15,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831043268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:15,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:15,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-18 14:38:15,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495844066] [2024-11-18 14:38:15,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:15,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:38:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:38:15,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:38:15,782 INFO L87 Difference]: Start difference. First operand 16598 states and 21315 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-18 14:38:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:19,514 INFO L93 Difference]: Finished difference Result 40155 states and 50991 transitions. [2024-11-18 14:38:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:38:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 165 [2024-11-18 14:38:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:19,590 INFO L225 Difference]: With dead ends: 40155 [2024-11-18 14:38:19,590 INFO L226 Difference]: Without dead ends: 23862 [2024-11-18 14:38:19,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:38:19,616 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 336 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:19,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1952 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23862 states. [2024-11-18 14:38:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23862 to 19735. [2024-11-18 14:38:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19735 states, 14725 states have (on average 1.2710356536502547) internal successors, (18716), 14866 states have internal predecessors, (18716), 3147 states have call successors, (3147), 1862 states have call predecessors, (3147), 1862 states have return successors, (3147), 3006 states have call predecessors, (3147), 3147 states have call successors, (3147) [2024-11-18 14:38:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19735 states to 19735 states and 25010 transitions. [2024-11-18 14:38:22,762 INFO L78 Accepts]: Start accepts. Automaton has 19735 states and 25010 transitions. Word has length 165 [2024-11-18 14:38:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:22,763 INFO L471 AbstractCegarLoop]: Abstraction has 19735 states and 25010 transitions. [2024-11-18 14:38:22,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-18 14:38:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19735 states and 25010 transitions. [2024-11-18 14:38:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 14:38:22,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:22,768 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:22,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:22,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 14:38:22,969 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:22,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668849, now seen corresponding path program 1 times [2024-11-18 14:38:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304899247] [2024-11-18 14:38:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-18 14:38:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304899247] [2024-11-18 14:38:23,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304899247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:23,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:38:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58736029] [2024-11-18 14:38:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:23,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:38:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:38:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:38:23,106 INFO L87 Difference]: Start difference. First operand 19735 states and 25010 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14)