./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.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.4_2.ufo.UNBOUNDED.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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:01,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:01,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:01,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:01,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:01,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:01,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:01,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:01,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:01,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:01,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:01,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:01,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:01,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:01,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:01,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:01,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:01,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:01,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:01,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:01,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:01,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:01,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:01,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:01,614 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:01,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:01,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:01,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:01,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:01,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:01,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:01,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:01,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:01,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:01,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:01,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:01,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:01,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:01,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:01,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:01,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:01,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:01,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2024-11-18 14:37:01,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:01,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:01,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:01,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:01,916 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:01,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:03,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:03,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:03,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:03,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c480241/28252af40289447aa0efad7e06b6f9e9/FLAG84112842c [2024-11-18 14:37:03,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c480241/28252af40289447aa0efad7e06b6f9e9 [2024-11-18 14:37:03,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:03,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:03,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:03,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:03,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:03,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:03" (1/1) ... [2024-11-18 14:37:03,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf4afd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:03, skipping insertion in model container [2024-11-18 14:37:03,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:03" (1/1) ... [2024-11-18 14:37:03,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:04,153 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.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2024-11-18 14:37:04,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:04,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:04,243 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.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2024-11-18 14:37:04,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:04,268 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:04,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04 WrapperNode [2024-11-18 14:37:04,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:04,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:04,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:04,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:04,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,332 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 507 [2024-11-18 14:37:04,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:04,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:04,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:04,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:04,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,389 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 14:37:04,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:04,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:04,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:04,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:04,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:04,464 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 14:37:04,470 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 14:37:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-18 14:37:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-18 14:37:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-18 14:37:04,523 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-18 14:37:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:04,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-18 14:37:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-18 14:37:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-18 14:37:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-18 14:37:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-18 14:37:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-18 14:37:04,638 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:04,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:05,284 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:05,285 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:05,311 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:05,313 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:37:05,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:05 BoogieIcfgContainer [2024-11-18 14:37:05,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:05,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:05,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:05,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:05,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:03" (1/3) ... [2024-11-18 14:37:05,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86e20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:05, skipping insertion in model container [2024-11-18 14:37:05,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (2/3) ... [2024-11-18 14:37:05,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86e20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:05, skipping insertion in model container [2024-11-18 14:37:05,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:05" (3/3) ... [2024-11-18 14:37:05,325 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:05,342 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:05,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:05,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:05,436 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;@34b66e8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:05,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 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 14:37:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:05,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:05,459 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 14:37:05,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:05,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2024-11-18 14:37:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:05,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763765527] [2024-11-18 14:37:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:05,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:05,794 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 14:37:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763765527] [2024-11-18 14:37:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763765527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:05,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:05,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:37:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832403311] [2024-11-18 14:37:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:05,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:37:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:37:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:05,824 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 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 14:37:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:05,868 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2024-11-18 14:37:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:37:05,872 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 14:37:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:05,883 INFO L225 Difference]: With dead ends: 340 [2024-11-18 14:37:05,883 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 14:37:05,888 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 14:37:05,892 INFO L432 NwaCegarLoop]: 273 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, 273 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 14:37:05,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 14:37:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 14:37:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 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 14:37:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2024-11-18 14:37:05,954 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2024-11-18 14:37:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:05,955 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2024-11-18 14:37:05,956 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 14:37:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2024-11-18 14:37:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:05,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:05,959 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 14:37:05,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:05,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:05,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2024-11-18 14:37:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894274633] [2024-11-18 14:37:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,295 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 14:37:06,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894274633] [2024-11-18 14:37:06,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894274633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81566618] [2024-11-18 14:37:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:06,301 INFO L87 Difference]: Start difference. First operand 176 states and 273 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 14:37:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,413 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2024-11-18 14:37:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:06,414 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 14:37:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,416 INFO L225 Difference]: With dead ends: 338 [2024-11-18 14:37:06,416 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 14:37:06,418 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 14:37:06,419 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:06,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1323 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 14:37:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 14:37:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 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 14:37:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2024-11-18 14:37:06,441 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2024-11-18 14:37:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,442 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2024-11-18 14:37:06,442 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 14:37:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2024-11-18 14:37:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 14:37:06,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,445 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 14:37:06,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:06,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2024-11-18 14:37:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033467345] [2024-11-18 14:37:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,771 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 14:37:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033467345] [2024-11-18 14:37:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033467345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045819674] [2024-11-18 14:37:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:06,777 INFO L87 Difference]: Start difference. First operand 176 states and 261 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 14:37:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,862 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2024-11-18 14:37:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:06,863 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 14:37:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,868 INFO L225 Difference]: With dead ends: 339 [2024-11-18 14:37:06,870 INFO L226 Difference]: Without dead ends: 180 [2024-11-18 14:37:06,871 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 14:37:06,873 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 3 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 755 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 14:37:06,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-18 14:37:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-18 14:37:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 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 14:37:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-18 14:37:06,902 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2024-11-18 14:37:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-18 14:37:06,903 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 14:37:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-18 14:37:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:37:06,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,906 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 14:37:06,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:06,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2024-11-18 14:37:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428098363] [2024-11-18 14:37:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,032 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 14:37:07,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428098363] [2024-11-18 14:37:07,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428098363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981515435] [2024-11-18 14:37:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:07,037 INFO L87 Difference]: Start difference. First operand 180 states and 264 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 14:37:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,094 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2024-11-18 14:37:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:07,095 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 14:37:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,100 INFO L225 Difference]: With dead ends: 494 [2024-11-18 14:37:07,100 INFO L226 Difference]: Without dead ends: 331 [2024-11-18 14:37:07,102 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 14:37:07,103 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 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 14:37:07,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-18 14:37:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2024-11-18 14:37:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 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 14:37:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2024-11-18 14:37:07,152 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2024-11-18 14:37:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,152 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2024-11-18 14:37:07,153 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 14:37:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2024-11-18 14:37:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:07,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,160 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 14:37:07,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:07,160 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2024-11-18 14:37:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580018954] [2024-11-18 14:37:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,259 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 14:37:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580018954] [2024-11-18 14:37:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580018954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734244449] [2024-11-18 14:37:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:07,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:07,263 INFO L87 Difference]: Start difference. First operand 326 states and 484 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 14:37:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,318 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2024-11-18 14:37:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:07,319 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 14:37:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,326 INFO L225 Difference]: With dead ends: 917 [2024-11-18 14:37:07,329 INFO L226 Difference]: Without dead ends: 608 [2024-11-18 14:37:07,330 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 14:37:07,332 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 545 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 14:37:07,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-18 14:37:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-18 14:37:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 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 14:37:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2024-11-18 14:37:07,408 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2024-11-18 14:37:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,409 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2024-11-18 14:37:07,409 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 14:37:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2024-11-18 14:37:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:07,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,411 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 14:37:07,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:07,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2024-11-18 14:37:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012271381] [2024-11-18 14:37:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,629 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 14:37:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012271381] [2024-11-18 14:37:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012271381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784734481] [2024-11-18 14:37:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:07,635 INFO L87 Difference]: Start difference. First operand 602 states and 901 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 14:37:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,865 INFO L93 Difference]: Finished difference Result 1291 states and 1928 transitions. [2024-11-18 14:37:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:07,866 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 14:37:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,876 INFO L225 Difference]: With dead ends: 1291 [2024-11-18 14:37:07,877 INFO L226 Difference]: Without dead ends: 706 [2024-11-18 14:37:07,879 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 14:37:07,881 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 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 14:37:07,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-18 14:37:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2024-11-18 14:37:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 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 14:37:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2024-11-18 14:37:07,943 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2024-11-18 14:37:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,945 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2024-11-18 14:37:07,945 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 14:37:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2024-11-18 14:37:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:07,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,947 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 14:37:07,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:37:07,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2024-11-18 14:37:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824519781] [2024-11-18 14:37:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,123 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 14:37:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824519781] [2024-11-18 14:37:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824519781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:08,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264953959] [2024-11-18 14:37:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:08,126 INFO L87 Difference]: Start difference. First operand 690 states and 1017 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 14:37:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,340 INFO L93 Difference]: Finished difference Result 1295 states and 1928 transitions. [2024-11-18 14:37:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:08,341 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 14:37:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,348 INFO L225 Difference]: With dead ends: 1295 [2024-11-18 14:37:08,348 INFO L226 Difference]: Without dead ends: 710 [2024-11-18 14:37:08,350 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 14:37:08,352 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 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 14:37:08,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-18 14:37:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2024-11-18 14:37:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 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 14:37:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2024-11-18 14:37:08,407 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2024-11-18 14:37:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,408 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2024-11-18 14:37:08,408 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 14:37:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2024-11-18 14:37:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:37:08,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,409 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 14:37:08,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:08,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2024-11-18 14:37:08,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723349051] [2024-11-18 14:37:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,572 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 14:37:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723349051] [2024-11-18 14:37:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723349051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307678428] [2024-11-18 14:37:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,575 INFO L87 Difference]: Start difference. First operand 698 states and 1025 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 14:37:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,726 INFO L93 Difference]: Finished difference Result 1283 states and 1908 transitions. [2024-11-18 14:37:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,727 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 14:37:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,732 INFO L225 Difference]: With dead ends: 1283 [2024-11-18 14:37:08,733 INFO L226 Difference]: Without dead ends: 698 [2024-11-18 14:37:08,735 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 14:37:08,736 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 61 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 663 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 14:37:08,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 663 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-18 14:37:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-18 14:37:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 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 14:37:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2024-11-18 14:37:08,781 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2024-11-18 14:37:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,782 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2024-11-18 14:37:08,782 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 14:37:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2024-11-18 14:37:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:37:08,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,783 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 14:37:08,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:08,784 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2024-11-18 14:37:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143494552] [2024-11-18 14:37:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,957 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 14:37:08,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143494552] [2024-11-18 14:37:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143494552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122713320] [2024-11-18 14:37:08,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,960 INFO L87 Difference]: Start difference. First operand 698 states and 1021 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 14:37:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,019 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2024-11-18 14:37:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,020 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 14:37:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,024 INFO L225 Difference]: With dead ends: 1303 [2024-11-18 14:37:09,025 INFO L226 Difference]: Without dead ends: 718 [2024-11-18 14:37:09,027 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 14:37:09,027 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 4 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 767 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 14:37:09,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-18 14:37:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-11-18 14:37:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 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 14:37:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2024-11-18 14:37:09,068 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2024-11-18 14:37:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,069 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2024-11-18 14:37:09,069 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 14:37:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2024-11-18 14:37:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:37:09,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,070 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 14:37:09,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:09,071 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2024-11-18 14:37:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229239171] [2024-11-18 14:37:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,243 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 14:37:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229239171] [2024-11-18 14:37:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229239171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064261247] [2024-11-18 14:37:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,246 INFO L87 Difference]: Start difference. First operand 718 states and 1037 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 14:37:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,334 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2024-11-18 14:37:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,335 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 14:37:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,340 INFO L225 Difference]: With dead ends: 1343 [2024-11-18 14:37:09,340 INFO L226 Difference]: Without dead ends: 738 [2024-11-18 14:37:09,343 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 14:37:09,343 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 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 14:37:09,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-18 14:37:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-18 14:37:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 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 14:37:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2024-11-18 14:37:09,390 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2024-11-18 14:37:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,391 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2024-11-18 14:37:09,391 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 14:37:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2024-11-18 14:37:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:09,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,392 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 14:37:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:09,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2024-11-18 14:37:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978793900] [2024-11-18 14:37:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,556 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 14:37:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978793900] [2024-11-18 14:37:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978793900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116978849] [2024-11-18 14:37:09,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,559 INFO L87 Difference]: Start difference. First operand 738 states and 1053 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 14:37:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,633 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2024-11-18 14:37:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,634 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 14:37:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,640 INFO L225 Difference]: With dead ends: 1379 [2024-11-18 14:37:09,640 INFO L226 Difference]: Without dead ends: 754 [2024-11-18 14:37:09,642 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 14:37:09,643 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 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 14:37:09,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-18 14:37:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-18 14:37:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 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 14:37:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2024-11-18 14:37:09,703 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2024-11-18 14:37:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,704 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2024-11-18 14:37:09,704 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 14:37:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2024-11-18 14:37:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:09,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,706 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 14:37:09,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:09,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2024-11-18 14:37:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663015128] [2024-11-18 14:37:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,886 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 14:37:09,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663015128] [2024-11-18 14:37:09,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663015128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163365472] [2024-11-18 14:37:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,888 INFO L87 Difference]: Start difference. First operand 754 states and 1065 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 14:37:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,971 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2024-11-18 14:37:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,972 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 14:37:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,978 INFO L225 Difference]: With dead ends: 1415 [2024-11-18 14:37:09,978 INFO L226 Difference]: Without dead ends: 774 [2024-11-18 14:37:09,980 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 14:37:09,981 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 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 14:37:09,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-18 14:37:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2024-11-18 14:37:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 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 14:37:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2024-11-18 14:37:10,029 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2024-11-18 14:37:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,029 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2024-11-18 14:37:10,030 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 14:37:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2024-11-18 14:37:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:37:10,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,032 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 14:37:10,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:10,032 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2024-11-18 14:37:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420996586] [2024-11-18 14:37:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,313 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 14:37:10,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420996586] [2024-11-18 14:37:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420996586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267776280] [2024-11-18 14:37:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,315 INFO L87 Difference]: Start difference. First operand 774 states and 1081 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 14:37:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,392 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2024-11-18 14:37:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,393 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 14:37:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,399 INFO L225 Difference]: With dead ends: 1459 [2024-11-18 14:37:10,400 INFO L226 Difference]: Without dead ends: 798 [2024-11-18 14:37:10,402 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 14:37:10,403 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 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 14:37:10,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-18 14:37:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2024-11-18 14:37:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 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 14:37:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2024-11-18 14:37:10,459 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2024-11-18 14:37:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,460 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2024-11-18 14:37:10,460 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 14:37:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2024-11-18 14:37:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:37:10,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,464 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 14:37:10,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:10,464 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2024-11-18 14:37:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546601546] [2024-11-18 14:37:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,130 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 14:37:11,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546601546] [2024-11-18 14:37:11,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546601546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043379778] [2024-11-18 14:37:11,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:11,132 INFO L87 Difference]: Start difference. First operand 798 states and 1101 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 14:37:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,482 INFO L93 Difference]: Finished difference Result 2053 states and 2823 transitions. [2024-11-18 14:37:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:11,483 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 14:37:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,491 INFO L225 Difference]: With dead ends: 2053 [2024-11-18 14:37:11,491 INFO L226 Difference]: Without dead ends: 1368 [2024-11-18 14:37:11,493 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 14:37:11,494 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 196 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1476 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-18 14:37:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1082. [2024-11-18 14:37:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 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 14:37:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2024-11-18 14:37:11,577 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2024-11-18 14:37:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,577 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2024-11-18 14:37:11,578 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 14:37:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2024-11-18 14:37:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 14:37:11,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,581 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 14:37:11,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:11,581 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2024-11-18 14:37:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889161668] [2024-11-18 14:37:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,745 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 14:37:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889161668] [2024-11-18 14:37:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889161668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699294770] [2024-11-18 14:37:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,748 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 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 14:37:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,848 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2024-11-18 14:37:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,849 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 14:37:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,857 INFO L225 Difference]: With dead ends: 2007 [2024-11-18 14:37:11,858 INFO L226 Difference]: Without dead ends: 1106 [2024-11-18 14:37:11,862 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 14:37:11,863 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 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 14:37:11,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-18 14:37:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-18 14:37:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 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 14:37:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2024-11-18 14:37:11,967 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2024-11-18 14:37:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,967 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2024-11-18 14:37:11,968 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 14:37:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2024-11-18 14:37:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 14:37:11,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,971 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 14:37:11,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:11,972 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2024-11-18 14:37:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223758027] [2024-11-18 14:37:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,378 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 14:37:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223758027] [2024-11-18 14:37:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223758027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584359769] [2024-11-18 14:37:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:12,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:12,383 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 14:37:12,384 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 14:37:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:37:12,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:12,728 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 14:37:12,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:12,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584359769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:12,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-18 14:37:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55342468] [2024-11-18 14:37:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:37:12,731 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 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 14:37:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,017 INFO L93 Difference]: Finished difference Result 2371 states and 3335 transitions. [2024-11-18 14:37:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:37:13,018 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 14:37:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,030 INFO L225 Difference]: With dead ends: 2371 [2024-11-18 14:37:13,031 INFO L226 Difference]: Without dead ends: 1534 [2024-11-18 14:37:13,035 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 14:37:13,036 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 139 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2866 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 14:37:13,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2866 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2024-11-18 14:37:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2024-11-18 14:37:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3557126030624265) internal successors, (1151), 856 states have internal predecessors, (1151), 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 14:37:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1499 transitions. [2024-11-18 14:37:13,152 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1499 transitions. Word has length 90 [2024-11-18 14:37:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,153 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1499 transitions. [2024-11-18 14:37:13,154 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 14:37:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1499 transitions. [2024-11-18 14:37:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:37:13,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,155 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 14:37:13,178 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 14:37:13,356 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 14:37:13,357 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2024-11-18 14:37:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812850581] [2024-11-18 14:37:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,523 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 14:37:13,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812850581] [2024-11-18 14:37:13,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812850581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:13,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906954288] [2024-11-18 14:37:13,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:13,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:13,525 INFO L87 Difference]: Start difference. First operand 1114 states and 1499 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 14:37:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,749 INFO L93 Difference]: Finished difference Result 2010 states and 2716 transitions. [2024-11-18 14:37:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:13,750 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 14:37:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,757 INFO L225 Difference]: With dead ends: 2010 [2024-11-18 14:37:13,758 INFO L226 Difference]: Without dead ends: 1159 [2024-11-18 14:37:13,760 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 14:37:13,761 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 255 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1485 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 14:37:13,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1485 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-18 14:37:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1117. [2024-11-18 14:37:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3487833140208574) internal successors, (1164), 875 states have internal predecessors, (1164), 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 14:37:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1488 transitions. [2024-11-18 14:37:13,847 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1488 transitions. Word has length 93 [2024-11-18 14:37:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,847 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1488 transitions. [2024-11-18 14:37:13,848 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 14:37:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1488 transitions. [2024-11-18 14:37:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:37:13,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,849 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 14:37:13,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:37:13,849 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2024-11-18 14:37:13,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223379836] [2024-11-18 14:37:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,457 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 14:37:14,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223379836] [2024-11-18 14:37:14,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223379836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:14,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530048939] [2024-11-18 14:37:14,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:14,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:14,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:14,459 INFO L87 Difference]: Start difference. First operand 1117 states and 1488 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 14:37:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,697 INFO L93 Difference]: Finished difference Result 1989 states and 2661 transitions. [2024-11-18 14:37:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:14,698 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 14:37:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,704 INFO L225 Difference]: With dead ends: 1989 [2024-11-18 14:37:14,705 INFO L226 Difference]: Without dead ends: 1115 [2024-11-18 14:37:14,707 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 14:37:14,708 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 150 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1601 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 14:37:14,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-18 14:37:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1008. [2024-11-18 14:37:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3508322663252241) internal successors, (1055), 791 states have internal predecessors, (1055), 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 14:37:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1345 transitions. [2024-11-18 14:37:14,780 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1345 transitions. Word has length 95 [2024-11-18 14:37:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,780 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1345 transitions. [2024-11-18 14:37:14,780 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 14:37:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1345 transitions. [2024-11-18 14:37:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:37:14,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,782 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 14:37:14,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:37:14,782 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2024-11-18 14:37:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340407420] [2024-11-18 14:37:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,291 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 14:37:15,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340407420] [2024-11-18 14:37:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340407420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557860647] [2024-11-18 14:37:15,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:15,293 INFO L87 Difference]: Start difference. First operand 1008 states and 1345 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,800 INFO L93 Difference]: Finished difference Result 1934 states and 2578 transitions. [2024-11-18 14:37:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:15,801 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), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 96 [2024-11-18 14:37:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,810 INFO L225 Difference]: With dead ends: 1934 [2024-11-18 14:37:15,810 INFO L226 Difference]: Without dead ends: 1099 [2024-11-18 14:37:15,813 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 14:37:15,814 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 418 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1472 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-18 14:37:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1046. [2024-11-18 14:37:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 804 states have (on average 1.3296019900497513) internal successors, (1069), 815 states have internal predecessors, (1069), 154 states have call successors, (154), 87 states have call predecessors, (154), 87 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 14:37:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1377 transitions. [2024-11-18 14:37:15,946 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1377 transitions. Word has length 96 [2024-11-18 14:37:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,947 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1377 transitions. [2024-11-18 14:37:15,947 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1377 transitions. [2024-11-18 14:37:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 14:37:15,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,948 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] [2024-11-18 14:37:15,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:37:15,948 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1605607307, now seen corresponding path program 1 times [2024-11-18 14:37:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370388638] [2024-11-18 14:37:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,487 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 14:37:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370388638] [2024-11-18 14:37:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370388638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689055832] [2024-11-18 14:37:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:16,489 INFO L87 Difference]: Start difference. First operand 1046 states and 1377 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 14:37:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,952 INFO L93 Difference]: Finished difference Result 2019 states and 2644 transitions. [2024-11-18 14:37:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 98 [2024-11-18 14:37:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,960 INFO L225 Difference]: With dead ends: 2019 [2024-11-18 14:37:16,961 INFO L226 Difference]: Without dead ends: 1159 [2024-11-18 14:37:16,963 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 14:37:16,964 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 407 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-18 14:37:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1068. [2024-11-18 14:37:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 818 states have (on average 1.3141809290953546) internal successors, (1075), 830 states have internal predecessors, (1075), 157 states have call successors, (157), 92 states have call predecessors, (157), 92 states have return successors, (157), 145 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-18 14:37:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1389 transitions. [2024-11-18 14:37:17,073 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1389 transitions. Word has length 98 [2024-11-18 14:37:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,073 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1389 transitions. [2024-11-18 14:37:17,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 14:37:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1389 transitions. [2024-11-18 14:37:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:37:17,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,075 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 14:37:17,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:37:17,076 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1784538508, now seen corresponding path program 1 times [2024-11-18 14:37:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428555216] [2024-11-18 14:37:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,188 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 14:37:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428555216] [2024-11-18 14:37:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428555216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747054699] [2024-11-18 14:37:17,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:17,190 INFO L87 Difference]: Start difference. First operand 1068 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:37:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,466 INFO L93 Difference]: Finished difference Result 2778 states and 3641 transitions. [2024-11-18 14:37:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 99 [2024-11-18 14:37:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,478 INFO L225 Difference]: With dead ends: 2778 [2024-11-18 14:37:17,479 INFO L226 Difference]: Without dead ends: 1974 [2024-11-18 14:37:17,482 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 14:37:17,483 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 199 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1151 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-18 14:37:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1793. [2024-11-18 14:37:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3151291512915129) internal successors, (1782), 1375 states have internal predecessors, (1782), 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 14:37:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2342 transitions. [2024-11-18 14:37:17,711 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2342 transitions. Word has length 99 [2024-11-18 14:37:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,712 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2342 transitions. [2024-11-18 14:37:17,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:37:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2342 transitions. [2024-11-18 14:37:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:17,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,714 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 14:37:17,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:37:17,715 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2024-11-18 14:37:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108969514] [2024-11-18 14:37:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,818 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 14:37:17,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108969514] [2024-11-18 14:37:17,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108969514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:17,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872525865] [2024-11-18 14:37:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:17,821 INFO L87 Difference]: Start difference. First operand 1793 states and 2342 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 14:37:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,156 INFO L93 Difference]: Finished difference Result 4547 states and 5974 transitions. [2024-11-18 14:37:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:18,156 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 14:37:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,176 INFO L225 Difference]: With dead ends: 4547 [2024-11-18 14:37:18,177 INFO L226 Difference]: Without dead ends: 3091 [2024-11-18 14:37:18,182 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 14:37:18,182 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 207 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1189 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 14:37:18,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1189 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2024-11-18 14:37:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2814. [2024-11-18 14:37:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3055687767729653) internal successors, (2743), 2132 states have internal predecessors, (2743), 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 14:37:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3663 transitions. [2024-11-18 14:37:18,538 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3663 transitions. Word has length 101 [2024-11-18 14:37:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,539 INFO L471 AbstractCegarLoop]: Abstraction has 2814 states and 3663 transitions. [2024-11-18 14:37:18,539 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 14:37:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3663 transitions. [2024-11-18 14:37:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:18,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,542 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] [2024-11-18 14:37:18,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:37:18,542 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2024-11-18 14:37:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266740297] [2024-11-18 14:37:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,655 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 14:37:18,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266740297] [2024-11-18 14:37:18,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266740297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:18,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698532031] [2024-11-18 14:37:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:18,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:18,658 INFO L87 Difference]: Start difference. First operand 2814 states and 3663 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 14:37:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:19,140 INFO L93 Difference]: Finished difference Result 6570 states and 8593 transitions. [2024-11-18 14:37:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:19,141 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 14:37:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:19,170 INFO L225 Difference]: With dead ends: 6570 [2024-11-18 14:37:19,170 INFO L226 Difference]: Without dead ends: 4213 [2024-11-18 14:37:19,182 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 14:37:19,183 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 200 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:19,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1201 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2024-11-18 14:37:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4030. [2024-11-18 14:37:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.301703975943869) internal successors, (3896), 3037 states have internal predecessors, (3896), 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 14:37:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5240 transitions. [2024-11-18 14:37:19,666 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5240 transitions. Word has length 101 [2024-11-18 14:37:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:19,667 INFO L471 AbstractCegarLoop]: Abstraction has 4030 states and 5240 transitions. [2024-11-18 14:37:19,671 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 14:37:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5240 transitions. [2024-11-18 14:37:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:37:19,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:19,677 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 14:37:19,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:37:19,678 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:19,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2024-11-18 14:37:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907492356] [2024-11-18 14:37:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,736 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 14:37:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907492356] [2024-11-18 14:37:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907492356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988915688] [2024-11-18 14:37:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:19,740 INFO L87 Difference]: Start difference. First operand 4030 states and 5240 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 14:37:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:20,173 INFO L93 Difference]: Finished difference Result 7739 states and 10111 transitions. [2024-11-18 14:37:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:20,173 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 14:37:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:20,202 INFO L225 Difference]: With dead ends: 7739 [2024-11-18 14:37:20,203 INFO L226 Difference]: Without dead ends: 4063 [2024-11-18 14:37:20,215 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 14:37:20,217 INFO L432 NwaCegarLoop]: 262 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, 487 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:20,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-11-18 14:37:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4036. [2024-11-18 14:37:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3011003667889296) internal successors, (3902), 3043 states have internal predecessors, (3902), 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 14:37:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5246 transitions. [2024-11-18 14:37:20,786 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5246 transitions. Word has length 102 [2024-11-18 14:37:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:20,787 INFO L471 AbstractCegarLoop]: Abstraction has 4036 states and 5246 transitions. [2024-11-18 14:37:20,787 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 14:37:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5246 transitions. [2024-11-18 14:37:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 14:37:20,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:20,790 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 14:37:20,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:37:20,790 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:20,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2024-11-18 14:37:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:20,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724206683] [2024-11-18 14:37:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,974 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 14:37:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:20,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724206683] [2024-11-18 14:37:20,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724206683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:20,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901374832] [2024-11-18 14:37:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:20,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:20,978 INFO L87 Difference]: Start difference. First operand 4036 states and 5246 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 14:37:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:21,414 INFO L93 Difference]: Finished difference Result 7704 states and 10038 transitions. [2024-11-18 14:37:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:21,415 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 14:37:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:21,457 INFO L225 Difference]: With dead ends: 7704 [2024-11-18 14:37:21,457 INFO L226 Difference]: Without dead ends: 3744 [2024-11-18 14:37:21,470 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 14:37:21,471 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 83 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 746 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 14:37:21,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 746 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2024-11-18 14:37:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3681. [2024-11-18 14:37:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3105977264393105) internal successors, (3574), 2761 states have internal predecessors, (3574), 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 14:37:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4814 transitions. [2024-11-18 14:37:21,801 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4814 transitions. Word has length 103 [2024-11-18 14:37:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:21,801 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4814 transitions. [2024-11-18 14:37:21,805 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 14:37:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4814 transitions. [2024-11-18 14:37:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:21,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:21,807 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 14:37:21,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:37:21,807 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:21,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2024-11-18 14:37:21,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:21,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717613979] [2024-11-18 14:37:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,865 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 14:37:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717613979] [2024-11-18 14:37:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717613979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:21,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:21,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:21,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962896350] [2024-11-18 14:37:21,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:21,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:21,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:21,867 INFO L87 Difference]: Start difference. First operand 3681 states and 4814 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 14:37:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:22,225 INFO L93 Difference]: Finished difference Result 7191 states and 9437 transitions. [2024-11-18 14:37:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:22,226 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 14:37:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:22,249 INFO L225 Difference]: With dead ends: 7191 [2024-11-18 14:37:22,249 INFO L226 Difference]: Without dead ends: 3691 [2024-11-18 14:37:22,261 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 14:37:22,261 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:22,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 485 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2024-11-18 14:37:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2024-11-18 14:37:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3094629156010231) internal successors, (3584), 2771 states have internal predecessors, (3584), 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 14:37:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4824 transitions. [2024-11-18 14:37:22,633 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4824 transitions. Word has length 104 [2024-11-18 14:37:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:22,633 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4824 transitions. [2024-11-18 14:37:22,634 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 14:37:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4824 transitions. [2024-11-18 14:37:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:22,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:22,636 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 14:37:22,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 14:37:22,636 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:22,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2024-11-18 14:37:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78523064] [2024-11-18 14:37:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:22,787 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 14:37:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78523064] [2024-11-18 14:37:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78523064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733588308] [2024-11-18 14:37:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:22,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:22,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:22,790 INFO L87 Difference]: Start difference. First operand 3691 states and 4824 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 14:37:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:23,116 INFO L93 Difference]: Finished difference Result 7183 states and 9409 transitions. [2024-11-18 14:37:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:23,116 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 14:37:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:23,138 INFO L225 Difference]: With dead ends: 7183 [2024-11-18 14:37:23,138 INFO L226 Difference]: Without dead ends: 3611 [2024-11-18 14:37:23,149 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 14:37:23,150 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 64 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 756 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 14:37:23,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 756 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2024-11-18 14:37:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2783. [2024-11-18 14:37:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.303926320891905) internal successors, (2690), 2082 states have internal predecessors, (2690), 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 14:37:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3628 transitions. [2024-11-18 14:37:23,406 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3628 transitions. Word has length 104 [2024-11-18 14:37:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:23,407 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 3628 transitions. [2024-11-18 14:37:23,407 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 14:37:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3628 transitions. [2024-11-18 14:37:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 14:37:23,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:23,413 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] [2024-11-18 14:37:23,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:37:23,413 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:23,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2024-11-18 14:37:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:23,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131151049] [2024-11-18 14:37:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:23,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:24,376 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 14:37:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131151049] [2024-11-18 14:37:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131151049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746238806] [2024-11-18 14:37:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:24,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:24,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:24,379 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 14:37:24,380 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 14:37:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:24,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:24,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:37:24,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:37:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746238806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:25,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-18 14:37:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824699565] [2024-11-18 14:37:25,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:25,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:37:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:37:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:37:25,183 INFO L87 Difference]: Start difference. First operand 2783 states and 3628 transitions. Second operand has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-18 14:37:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:28,273 INFO L93 Difference]: Finished difference Result 9288 states and 12094 transitions. [2024-11-18 14:37:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-18 14:37:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) Word has length 153 [2024-11-18 14:37:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:28,306 INFO L225 Difference]: With dead ends: 9288 [2024-11-18 14:37:28,307 INFO L226 Difference]: Without dead ends: 6696 [2024-11-18 14:37:28,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2024-11-18 14:37:28,317 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 1922 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:28,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 4618 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 14:37:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2024-11-18 14:37:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 5643. [2024-11-18 14:37:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5643 states, 4150 states have (on average 1.304578313253012) internal successors, (5414), 4187 states have internal predecessors, (5414), 972 states have call successors, (972), 520 states have call predecessors, (972), 520 states have return successors, (972), 935 states have call predecessors, (972), 972 states have call successors, (972) [2024-11-18 14:37:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 7358 transitions. [2024-11-18 14:37:28,894 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 7358 transitions. Word has length 153 [2024-11-18 14:37:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:28,894 INFO L471 AbstractCegarLoop]: Abstraction has 5643 states and 7358 transitions. [2024-11-18 14:37:28,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-18 14:37:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 7358 transitions. [2024-11-18 14:37:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:37:28,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:28,903 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] [2024-11-18 14:37:28,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:29,107 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 14:37:29,108 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:29,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -950230078, now seen corresponding path program 1 times [2024-11-18 14:37:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:29,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59458876] [2024-11-18 14:37:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:29,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:37:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59458876] [2024-11-18 14:37:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59458876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364413987] [2024-11-18 14:37:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:29,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:29,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:29,864 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 14:37:29,866 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 14:37:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:30,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 14:37:30,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 37 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:30,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 14:37:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364413987] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:30,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:37:30,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 17] total 24 [2024-11-18 14:37:30,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632794789] [2024-11-18 14:37:30,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:30,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:30,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:37:30,597 INFO L87 Difference]: Start difference. First operand 5643 states and 7358 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:30,988 INFO L93 Difference]: Finished difference Result 9923 states and 12992 transitions. [2024-11-18 14:37:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 155 [2024-11-18 14:37:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,019 INFO L225 Difference]: With dead ends: 9923 [2024-11-18 14:37:31,019 INFO L226 Difference]: Without dead ends: 4448 [2024-11-18 14:37:31,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:37:31,033 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-18 14:37:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4448. [2024-11-18 14:37:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3292 states have (on average 1.3049817739975698) internal successors, (4296), 3320 states have internal predecessors, (4296), 751 states have call successors, (751), 404 states have call predecessors, (751), 404 states have return successors, (751), 723 states have call predecessors, (751), 751 states have call successors, (751) [2024-11-18 14:37:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 5798 transitions. [2024-11-18 14:37:31,498 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 5798 transitions. Word has length 155 [2024-11-18 14:37:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,499 INFO L471 AbstractCegarLoop]: Abstraction has 4448 states and 5798 transitions. [2024-11-18 14:37:31,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 5798 transitions. [2024-11-18 14:37:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:37:31,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,507 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] [2024-11-18 14:37:31,527 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 14:37:31,710 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 14:37:31,711 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash -896873483, now seen corresponding path program 1 times [2024-11-18 14:37:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867625227] [2024-11-18 14:37:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:32,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867625227] [2024-11-18 14:37:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867625227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:32,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061408072] [2024-11-18 14:37:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:32,682 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 14:37:32,684 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 14:37:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 14:37:32,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:33,531 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 14:37:33,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:34,304 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 14:37:34,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061408072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:34,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:34,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-11-18 14:37:34,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023981283] [2024-11-18 14:37:34,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:34,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 14:37:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 14:37:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:37:34,307 INFO L87 Difference]: Start difference. First operand 4448 states and 5798 transitions. Second operand has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-18 14:37:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:38,936 INFO L93 Difference]: Finished difference Result 10824 states and 14092 transitions. [2024-11-18 14:37:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-18 14:37:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 156 [2024-11-18 14:37:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:38,964 INFO L225 Difference]: With dead ends: 10824 [2024-11-18 14:37:38,965 INFO L226 Difference]: Without dead ends: 6629 [2024-11-18 14:37:38,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1609, Invalid=6581, Unknown=0, NotChecked=0, Total=8190 [2024-11-18 14:37:38,976 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 3302 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:38,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3302 Valid, 3704 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 14:37:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2024-11-18 14:37:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6232. [2024-11-18 14:37:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 4602 states have (on average 1.2970447631464581) internal successors, (5969), 4643 states have internal predecessors, (5969), 1050 states have call successors, (1050), 579 states have call predecessors, (1050), 579 states have return successors, (1050), 1009 states have call predecessors, (1050), 1050 states have call successors, (1050) [2024-11-18 14:37:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8069 transitions. [2024-11-18 14:37:39,647 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8069 transitions. Word has length 156 [2024-11-18 14:37:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:39,650 INFO L471 AbstractCegarLoop]: Abstraction has 6232 states and 8069 transitions. [2024-11-18 14:37:39,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-18 14:37:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8069 transitions. [2024-11-18 14:37:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 14:37:39,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:39,660 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] [2024-11-18 14:37:39,679 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 14:37:39,861 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 14:37:39,861 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:39,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1833817774, now seen corresponding path program 1 times [2024-11-18 14:37:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856453547] [2024-11-18 14:37:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:39,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,083 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 14:37:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856453547] [2024-11-18 14:37:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856453547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956643561] [2024-11-18 14:37:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:40,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:40,085 INFO L87 Difference]: Start difference. First operand 6232 states and 8069 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 14:37:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:41,608 INFO L93 Difference]: Finished difference Result 18294 states and 23745 transitions. [2024-11-18 14:37:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 158 [2024-11-18 14:37:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:41,674 INFO L225 Difference]: With dead ends: 18294 [2024-11-18 14:37:41,674 INFO L226 Difference]: Without dead ends: 12367 [2024-11-18 14:37:41,693 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 14:37:41,694 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 223 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2568 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 14:37:41,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2568 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2024-11-18 14:37:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 8853. [2024-11-18 14:37:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 6489 states have (on average 1.294960702727693) internal successors, (8403), 6549 states have internal predecessors, (8403), 1539 states have call successors, (1539), 824 states have call predecessors, (1539), 824 states have return successors, (1539), 1479 states have call predecessors, (1539), 1539 states have call successors, (1539) [2024-11-18 14:37:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 11481 transitions. [2024-11-18 14:37:42,777 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 11481 transitions. Word has length 158 [2024-11-18 14:37:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:42,779 INFO L471 AbstractCegarLoop]: Abstraction has 8853 states and 11481 transitions. [2024-11-18 14:37:42,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 14:37:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 11481 transitions. [2024-11-18 14:37:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 14:37:42,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:42,800 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] [2024-11-18 14:37:42,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 14:37:42,800 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:42,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1397411830, now seen corresponding path program 1 times [2024-11-18 14:37:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593126333] [2024-11-18 14:37:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,990 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 14:37:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593126333] [2024-11-18 14:37:43,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593126333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752518462] [2024-11-18 14:37:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:43,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:43,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:43,993 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 14:37:43,994 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 14:37:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:44,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 14:37:44,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:44,812 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 14:37:44,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:47,022 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 14:37:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752518462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:47,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2024-11-18 14:37:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104392594] [2024-11-18 14:37:47,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:47,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 14:37:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 14:37:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:37:47,025 INFO L87 Difference]: Start difference. First operand 8853 states and 11481 transitions. Second operand has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 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 14:37:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:50,112 INFO L93 Difference]: Finished difference Result 18102 states and 23530 transitions. [2024-11-18 14:37:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:37:50,113 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 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 158 [2024-11-18 14:37:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:50,174 INFO L225 Difference]: With dead ends: 18102 [2024-11-18 14:37:50,175 INFO L226 Difference]: Without dead ends: 9554 [2024-11-18 14:37:50,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 14:37:50,201 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1108 mSDsluCounter, 6015 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:50,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 6479 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 14:37:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2024-11-18 14:37:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 9245. [2024-11-18 14:37:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 6784 states have (on average 1.294369103773585) internal successors, (8781), 6847 states have internal predecessors, (8781), 1602 states have call successors, (1602), 858 states have call predecessors, (1602), 858 states have return successors, (1602), 1539 states have call predecessors, (1602), 1602 states have call successors, (1602) [2024-11-18 14:37:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 11985 transitions. [2024-11-18 14:37:51,501 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 11985 transitions. Word has length 158 [2024-11-18 14:37:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:51,501 INFO L471 AbstractCegarLoop]: Abstraction has 9245 states and 11985 transitions. [2024-11-18 14:37:51,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 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 14:37:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 11985 transitions. [2024-11-18 14:37:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:37:51,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:51,514 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 14:37:51,533 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 14:37:51,714 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 14:37:51,715 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:51,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash -747886001, now seen corresponding path program 1 times [2024-11-18 14:37:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724366707] [2024-11-18 14:37:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:52,258 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 14:37:52,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724366707] [2024-11-18 14:37:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724366707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199543183] [2024-11-18 14:37:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:52,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:52,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:52,260 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 14:37:52,261 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 14:37:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:52,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:52,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:52,784 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 14:37:52,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:53,064 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 14:37:53,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199543183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:53,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:53,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-18 14:37:53,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352228806] [2024-11-18 14:37:53,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:53,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:37:53,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:53,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:37:53,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:37:53,066 INFO L87 Difference]: Start difference. First operand 9245 states and 11985 transitions. Second operand has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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 14:37:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:55,633 INFO L93 Difference]: Finished difference Result 23230 states and 30203 transitions. [2024-11-18 14:37:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 14:37:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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 159 [2024-11-18 14:37:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:55,704 INFO L225 Difference]: With dead ends: 23230 [2024-11-18 14:37:55,704 INFO L226 Difference]: Without dead ends: 14290 [2024-11-18 14:37:55,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 316 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 14:37:55,730 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 2292 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:55,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 2553 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 14:37:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14290 states. [2024-11-18 14:37:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14290 to 13095. [2024-11-18 14:37:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13095 states, 9588 states have (on average 1.2982895285773883) internal successors, (12448), 9683 states have internal predecessors, (12448), 2284 states have call successors, (2284), 1222 states have call predecessors, (2284), 1222 states have return successors, (2284), 2189 states have call predecessors, (2284), 2284 states have call successors, (2284) [2024-11-18 14:37:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 17016 transitions. [2024-11-18 14:37:57,408 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 17016 transitions. Word has length 159 [2024-11-18 14:37:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:57,409 INFO L471 AbstractCegarLoop]: Abstraction has 13095 states and 17016 transitions. [2024-11-18 14:37:57,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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 14:37:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 17016 transitions. [2024-11-18 14:37:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:37:57,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:57,422 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, 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 14:37:57,442 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 14:37:57,622 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 14:37:57,623 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:57,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1784161869, now seen corresponding path program 1 times [2024-11-18 14:37:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595403150] [2024-11-18 14:37:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:58,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595403150] [2024-11-18 14:37:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595403150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:58,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533694301] [2024-11-18 14:37:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:58,175 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 14:37:58,176 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 14:37:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:58,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:58,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533694301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:59,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-18 14:37:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475978825] [2024-11-18 14:37:59,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:37:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:37:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:59,131 INFO L87 Difference]: Start difference. First operand 13095 states and 17016 transitions. Second operand has 18 states, 18 states have (on average 12.5) 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, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-18 14:38:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,468 INFO L93 Difference]: Finished difference Result 31966 states and 41701 transitions. [2024-11-18 14:38:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-18 14:38:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.5) 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, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 160 [2024-11-18 14:38:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,580 INFO L225 Difference]: With dead ends: 31966 [2024-11-18 14:38:02,580 INFO L226 Difference]: Without dead ends: 19176 [2024-11-18 14:38:02,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 14:38:02,619 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 1656 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2422 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:38:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19176 states. [2024-11-18 14:38:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19176 to 18925. [2024-11-18 14:38:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 13911 states have (on average 1.3017755732873266) internal successors, (18109), 14045 states have internal predecessors, (18109), 3255 states have call successors, (3255), 1758 states have call predecessors, (3255), 1758 states have return successors, (3255), 3121 states have call predecessors, (3255), 3255 states have call successors, (3255) [2024-11-18 14:38:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 24619 transitions. [2024-11-18 14:38:05,080 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 24619 transitions. Word has length 160 [2024-11-18 14:38:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:05,081 INFO L471 AbstractCegarLoop]: Abstraction has 18925 states and 24619 transitions. [2024-11-18 14:38:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.5) 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, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-18 14:38:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 24619 transitions. [2024-11-18 14:38:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:38:05,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:05,099 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, 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 14:38:05,122 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 14:38:05,300 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 14:38:05,300 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:05,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash 823751420, now seen corresponding path program 1 times [2024-11-18 14:38:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698278216] [2024-11-18 14:38:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:38:06,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698278216] [2024-11-18 14:38:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698278216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065519983] [2024-11-18 14:38:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:06,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:06,069 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 14:38:06,071 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 14:38:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 14:38:06,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:38:06,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 14:38:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065519983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:06,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:06,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2024-11-18 14:38:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322472916] [2024-11-18 14:38:06,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:06,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:38:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:38:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:38:06,732 INFO L87 Difference]: Start difference. First operand 18925 states and 24619 transitions. Second operand has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34)