./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.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 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:18:48,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:18:48,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:18:48,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:18:48,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:18:48,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:18:48,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:18:48,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:18:48,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:18:48,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:18:48,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:18:48,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:18:48,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:18:48,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:18:48,623 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:18:48,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:18:48,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:18:48,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:18:48,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:18:48,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:18:48,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:18:48,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:18:48,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:18:48,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:18:48,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:18:48,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:18:48,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:18:48,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:18:48,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:18:48,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:18:48,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:18:48,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:18:48,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:18:48,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:18:48,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:18:48,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:18:48,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:18:48,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:18:48,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:18:48,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:18:48,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:18:48,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:18:48,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2024-10-24 01:18:48,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:18:48,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:18:48,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:18:48,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:18:48,864 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:18:48,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-10-24 01:18:50,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:18:50,345 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:18:50,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-10-24 01:18:50,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c562a075f/2d9d1964b0af428887d85a81b0f56928/FLAG970699dd9 [2024-10-24 01:18:50,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c562a075f/2d9d1964b0af428887d85a81b0f56928 [2024-10-24 01:18:50,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:18:50,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:18:50,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:18:50,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:18:50,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:18:50,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40aa0f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50, skipping insertion in model container [2024-10-24 01:18:50,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:18:50,645 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2024-10-24 01:18:50,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:18:50,657 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:18:50,739 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2024-10-24 01:18:50,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:18:50,757 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:18:50,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50 WrapperNode [2024-10-24 01:18:50,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:18:50,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:18:50,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:18:50,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:18:50,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,816 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 507 [2024-10-24 01:18:50,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:18:50,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:18:50,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:18:50,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:18:50,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,846 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]. [2024-10-24 01:18:50,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:18:50,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:18:50,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:18:50,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:18:50,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (1/1) ... [2024-10-24 01:18:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:18:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:18:50,908 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) [2024-10-24 01:18:50,913 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 [2024-10-24 01:18:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-10-24 01:18:50,954 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-10-24 01:18:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:18:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-10-24 01:18:50,954 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-10-24 01:18:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-10-24 01:18:50,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-10-24 01:18:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-10-24 01:18:50,956 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-10-24 01:18:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 01:18:50,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 01:18:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:18:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-10-24 01:18:50,956 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-10-24 01:18:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:18:50,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:18:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-10-24 01:18:50,957 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-10-24 01:18:51,060 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:18:51,062 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:18:51,587 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-10-24 01:18:51,587 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:18:51,640 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:18:51,640 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:18:51,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:18:51 BoogieIcfgContainer [2024-10-24 01:18:51,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:18:51,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:18:51,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:18:51,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:18:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:18:50" (1/3) ... [2024-10-24 01:18:51,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c309e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:18:51, skipping insertion in model container [2024-10-24 01:18:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:18:50" (2/3) ... [2024-10-24 01:18:51,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c309e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:18:51, skipping insertion in model container [2024-10-24 01:18:51,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:18:51" (3/3) ... [2024-10-24 01:18:51,650 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-10-24 01:18:51,663 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:18:51,663 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:18:51,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:18:51,729 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;@3cb4dbb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:18:51,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:18:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 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) [2024-10-24 01:18:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 01:18:51,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:51,741 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] [2024-10-24 01:18:51,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:51,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash 975176766, now seen corresponding path program 1 times [2024-10-24 01:18:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642087548] [2024-10-24 01:18:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:51,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 01:18:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:18:51,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:51,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642087548] [2024-10-24 01:18:51,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642087548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:51,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:51,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:18:51,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827825851] [2024-10-24 01:18:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:51,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:18:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:18:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:18:52,047 INFO L87 Difference]: Start difference. First operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-10-24 01:18:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:52,155 INFO L93 Difference]: Finished difference Result 323 states and 540 transitions. [2024-10-24 01:18:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:18:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 23 [2024-10-24 01:18:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:52,169 INFO L225 Difference]: With dead ends: 323 [2024-10-24 01:18:52,169 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 01:18:52,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:18:52,180 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:52,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 01:18:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-24 01:18:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.573643410852713) internal successors, (203), 130 states have internal predecessors, (203), 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) [2024-10-24 01:18:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 265 transitions. [2024-10-24 01:18:52,249 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 265 transitions. Word has length 23 [2024-10-24 01:18:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:52,253 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 265 transitions. [2024-10-24 01:18:52,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-10-24 01:18:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 265 transitions. [2024-10-24 01:18:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 01:18:52,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:52,256 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] [2024-10-24 01:18:52,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:18:52,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:52,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1018967940, now seen corresponding path program 1 times [2024-10-24 01:18:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438283266] [2024-10-24 01:18:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:52,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 01:18:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:18:52,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:52,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438283266] [2024-10-24 01:18:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438283266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:52,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:52,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:18:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014151854] [2024-10-24 01:18:52,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:52,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:18:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:18:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:18:52,503 INFO L87 Difference]: Start difference. First operand 168 states and 265 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-10-24 01:18:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:52,605 INFO L93 Difference]: Finished difference Result 323 states and 505 transitions. [2024-10-24 01:18:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:18:52,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 23 [2024-10-24 01:18:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:52,607 INFO L225 Difference]: With dead ends: 323 [2024-10-24 01:18:52,607 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 01:18:52,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:18:52,609 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:52,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1260 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 01:18:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-24 01:18:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 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) [2024-10-24 01:18:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2024-10-24 01:18:52,635 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 23 [2024-10-24 01:18:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:52,636 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2024-10-24 01:18:52,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-10-24 01:18:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2024-10-24 01:18:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:18:52,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:52,637 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] [2024-10-24 01:18:52,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:18:52,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:52,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash 26280683, now seen corresponding path program 1 times [2024-10-24 01:18:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:52,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064638863] [2024-10-24 01:18:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:52,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:18:52,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:52,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064638863] [2024-10-24 01:18:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064638863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:52,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393061761] [2024-10-24 01:18:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:52,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:52,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:52,874 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-24 01:18:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:52,957 INFO L93 Difference]: Finished difference Result 324 states and 497 transitions. [2024-10-24 01:18:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 34 [2024-10-24 01:18:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:52,960 INFO L225 Difference]: With dead ends: 324 [2024-10-24 01:18:52,962 INFO L226 Difference]: Without dead ends: 172 [2024-10-24 01:18:52,962 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 [2024-10-24 01:18:52,964 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 3 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:52,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-10-24 01:18:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-10-24 01:18:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 133 states have internal predecessors, (194), 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) [2024-10-24 01:18:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2024-10-24 01:18:52,975 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 34 [2024-10-24 01:18:52,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:52,976 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2024-10-24 01:18:52,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-24 01:18:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2024-10-24 01:18:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 01:18:52,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:52,977 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] [2024-10-24 01:18:52,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:18:52,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:52,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1285077620, now seen corresponding path program 1 times [2024-10-24 01:18:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239345849] [2024-10-24 01:18:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:52,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 01:18:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:53,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239345849] [2024-10-24 01:18:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239345849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:18:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400550981] [2024-10-24 01:18:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:53,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:18:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:18:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:18:53,065 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-24 01:18:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:53,109 INFO L93 Difference]: Finished difference Result 473 states and 714 transitions. [2024-10-24 01:18:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:18:53,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 48 [2024-10-24 01:18:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:53,113 INFO L225 Difference]: With dead ends: 473 [2024-10-24 01:18:53,113 INFO L226 Difference]: Without dead ends: 317 [2024-10-24 01:18:53,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:18:53,116 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 209 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:53,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 495 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-24 01:18:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 314. [2024-10-24 01:18:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 237 states have (on average 1.4852320675105486) internal successors, (352), 239 states have internal predecessors, (352), 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) [2024-10-24 01:18:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 472 transitions. [2024-10-24 01:18:53,157 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 472 transitions. Word has length 48 [2024-10-24 01:18:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:53,158 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 472 transitions. [2024-10-24 01:18:53,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-24 01:18:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 472 transitions. [2024-10-24 01:18:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:18:53,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:53,161 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] [2024-10-24 01:18:53,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:18:53,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:53,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -271052700, now seen corresponding path program 1 times [2024-10-24 01:18:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226871931] [2024-10-24 01:18:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 01:18:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226871931] [2024-10-24 01:18:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226871931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:53,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:18:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009621460] [2024-10-24 01:18:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:53,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:18:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:18:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:18:53,246 INFO L87 Difference]: Start difference. First operand 314 states and 472 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-24 01:18:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:53,310 INFO L93 Difference]: Finished difference Result 886 states and 1342 transitions. [2024-10-24 01:18:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:18:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 49 [2024-10-24 01:18:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:53,319 INFO L225 Difference]: With dead ends: 886 [2024-10-24 01:18:53,320 INFO L226 Difference]: Without dead ends: 588 [2024-10-24 01:18:53,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:18:53,322 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 210 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:53,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:53,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-10-24 01:18:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 582. [2024-10-24 01:18:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 433 states have (on average 1.4942263279445727) internal successors, (647), 437 states have internal predecessors, (647), 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) [2024-10-24 01:18:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 881 transitions. [2024-10-24 01:18:53,378 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 881 transitions. Word has length 49 [2024-10-24 01:18:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:53,380 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 881 transitions. [2024-10-24 01:18:53,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-24 01:18:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 881 transitions. [2024-10-24 01:18:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:18:53,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:53,384 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] [2024-10-24 01:18:53,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:18:53,385 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:53,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1550916378, now seen corresponding path program 1 times [2024-10-24 01:18:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853550911] [2024-10-24 01:18:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 01:18:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:53,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853550911] [2024-10-24 01:18:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853550911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:53,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:53,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:18:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140288605] [2024-10-24 01:18:53,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:53,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:18:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:18:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:53,503 INFO L87 Difference]: Start difference. First operand 582 states and 881 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-10-24 01:18:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:53,669 INFO L93 Difference]: Finished difference Result 1237 states and 1874 transitions. [2024-10-24 01:18:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:18:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 49 [2024-10-24 01:18:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:53,676 INFO L225 Difference]: With dead ends: 1237 [2024-10-24 01:18:53,676 INFO L226 Difference]: Without dead ends: 671 [2024-10-24 01:18:53,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:18:53,681 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 347 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:53,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 645 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-10-24 01:18:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 663. [2024-10-24 01:18:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 501 states have (on average 1.4810379241516967) internal successors, (742), 504 states have internal predecessors, (742), 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) [2024-10-24 01:18:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 990 transitions. [2024-10-24 01:18:53,736 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 990 transitions. Word has length 49 [2024-10-24 01:18:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:53,737 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 990 transitions. [2024-10-24 01:18:53,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-10-24 01:18:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 990 transitions. [2024-10-24 01:18:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:18:53,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:53,743 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] [2024-10-24 01:18:53,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:18:53,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:53,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1743107091, now seen corresponding path program 1 times [2024-10-24 01:18:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:53,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618239915] [2024-10-24 01:18:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 01:18:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:53,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618239915] [2024-10-24 01:18:53,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618239915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:53,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:53,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:18:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049867861] [2024-10-24 01:18:53,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:53,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:18:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:18:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:53,898 INFO L87 Difference]: Start difference. First operand 663 states and 990 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-10-24 01:18:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:54,061 INFO L93 Difference]: Finished difference Result 1241 states and 1874 transitions. [2024-10-24 01:18:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:18:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 50 [2024-10-24 01:18:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:54,068 INFO L225 Difference]: With dead ends: 1241 [2024-10-24 01:18:54,068 INFO L226 Difference]: Without dead ends: 675 [2024-10-24 01:18:54,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:18:54,071 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 347 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:54,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 645 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-10-24 01:18:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2024-10-24 01:18:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4734774066797642) internal successors, (750), 512 states have internal predecessors, (750), 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) [2024-10-24 01:18:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 998 transitions. [2024-10-24 01:18:54,114 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 998 transitions. Word has length 50 [2024-10-24 01:18:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:54,115 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 998 transitions. [2024-10-24 01:18:54,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-10-24 01:18:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 998 transitions. [2024-10-24 01:18:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:18:54,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:54,118 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] [2024-10-24 01:18:54,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:18:54,118 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1020972895, now seen corresponding path program 1 times [2024-10-24 01:18:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:54,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436133782] [2024-10-24 01:18:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 01:18:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:54,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436133782] [2024-10-24 01:18:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436133782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:54,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819696495] [2024-10-24 01:18:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:54,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:54,264 INFO L87 Difference]: Start difference. First operand 671 states and 998 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-10-24 01:18:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:54,396 INFO L93 Difference]: Finished difference Result 1237 states and 1862 transitions. [2024-10-24 01:18:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 52 [2024-10-24 01:18:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:54,403 INFO L225 Difference]: With dead ends: 1237 [2024-10-24 01:18:54,403 INFO L226 Difference]: Without dead ends: 671 [2024-10-24 01:18:54,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:54,407 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 58 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:54,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 640 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-10-24 01:18:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-10-24 01:18:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4656188605108056) internal successors, (746), 512 states have internal predecessors, (746), 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) [2024-10-24 01:18:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 994 transitions. [2024-10-24 01:18:54,459 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 994 transitions. Word has length 52 [2024-10-24 01:18:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:54,460 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 994 transitions. [2024-10-24 01:18:54,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-10-24 01:18:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 994 transitions. [2024-10-24 01:18:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:18:54,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:54,461 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] [2024-10-24 01:18:54,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:18:54,461 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:54,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 70077876, now seen corresponding path program 1 times [2024-10-24 01:18:54,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:54,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776582830] [2024-10-24 01:18:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776582830] [2024-10-24 01:18:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776582830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109132958] [2024-10-24 01:18:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:54,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:54,626 INFO L87 Difference]: Start difference. First operand 671 states and 994 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-24 01:18:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:54,689 INFO L93 Difference]: Finished difference Result 1257 states and 1886 transitions. [2024-10-24 01:18:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 53 [2024-10-24 01:18:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:54,694 INFO L225 Difference]: With dead ends: 1257 [2024-10-24 01:18:54,695 INFO L226 Difference]: Without dead ends: 691 [2024-10-24 01:18:54,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:54,697 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 4 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:54,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 728 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-10-24 01:18:54,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2024-10-24 01:18:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 525 states have (on average 1.4514285714285715) internal successors, (762), 528 states have internal predecessors, (762), 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) [2024-10-24 01:18:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1010 transitions. [2024-10-24 01:18:54,737 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1010 transitions. Word has length 53 [2024-10-24 01:18:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:54,737 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1010 transitions. [2024-10-24 01:18:54,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-24 01:18:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1010 transitions. [2024-10-24 01:18:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:18:54,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:54,739 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] [2024-10-24 01:18:54,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:18:54,739 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:54,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2022849498, now seen corresponding path program 1 times [2024-10-24 01:18:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:54,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697138771] [2024-10-24 01:18:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:54,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697138771] [2024-10-24 01:18:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697138771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:54,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615101166] [2024-10-24 01:18:54,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:54,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:54,889 INFO L87 Difference]: Start difference. First operand 691 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-24 01:18:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:54,972 INFO L93 Difference]: Finished difference Result 1297 states and 1930 transitions. [2024-10-24 01:18:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:54,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 61 [2024-10-24 01:18:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:54,977 INFO L225 Difference]: With dead ends: 1297 [2024-10-24 01:18:54,978 INFO L226 Difference]: Without dead ends: 711 [2024-10-24 01:18:54,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:54,980 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 4 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:54,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-10-24 01:18:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2024-10-24 01:18:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 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) [2024-10-24 01:18:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1026 transitions. [2024-10-24 01:18:55,024 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1026 transitions. Word has length 61 [2024-10-24 01:18:55,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:55,025 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1026 transitions. [2024-10-24 01:18:55,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-24 01:18:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1026 transitions. [2024-10-24 01:18:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:18:55,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:55,027 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] [2024-10-24 01:18:55,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:18:55,028 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:55,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1319245148, now seen corresponding path program 1 times [2024-10-24 01:18:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:55,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872211874] [2024-10-24 01:18:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872211874] [2024-10-24 01:18:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872211874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:55,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:55,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946609072] [2024-10-24 01:18:55,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:55,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:55,169 INFO L87 Difference]: Start difference. First operand 711 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 01:18:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:55,242 INFO L93 Difference]: Finished difference Result 1333 states and 1946 transitions. [2024-10-24 01:18:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:55,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 69 [2024-10-24 01:18:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:55,247 INFO L225 Difference]: With dead ends: 1333 [2024-10-24 01:18:55,247 INFO L226 Difference]: Without dead ends: 727 [2024-10-24 01:18:55,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:55,250 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:55,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 724 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-10-24 01:18:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2024-10-24 01:18:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 553 states have (on average 1.4285714285714286) internal successors, (790), 556 states have internal predecessors, (790), 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) [2024-10-24 01:18:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1038 transitions. [2024-10-24 01:18:55,285 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1038 transitions. Word has length 69 [2024-10-24 01:18:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:55,286 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1038 transitions. [2024-10-24 01:18:55,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 01:18:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1038 transitions. [2024-10-24 01:18:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:18:55,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:55,288 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] [2024-10-24 01:18:55,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:18:55,288 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:55,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1077214155, now seen corresponding path program 1 times [2024-10-24 01:18:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743304151] [2024-10-24 01:18:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:18:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743304151] [2024-10-24 01:18:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743304151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:55,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:55,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526672424] [2024-10-24 01:18:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:55,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:55,449 INFO L87 Difference]: Start difference. First operand 727 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 01:18:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:55,521 INFO L93 Difference]: Finished difference Result 1369 states and 1986 transitions. [2024-10-24 01:18:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:55,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 69 [2024-10-24 01:18:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:55,525 INFO L225 Difference]: With dead ends: 1369 [2024-10-24 01:18:55,526 INFO L226 Difference]: Without dead ends: 747 [2024-10-24 01:18:55,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:55,528 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 4 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:55,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-10-24 01:18:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2024-10-24 01:18:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 569 states have (on average 1.4165202108963093) internal successors, (806), 572 states have internal predecessors, (806), 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) [2024-10-24 01:18:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1054 transitions. [2024-10-24 01:18:55,560 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1054 transitions. Word has length 69 [2024-10-24 01:18:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:55,560 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1054 transitions. [2024-10-24 01:18:55,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 01:18:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1054 transitions. [2024-10-24 01:18:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:18:55,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:55,562 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] [2024-10-24 01:18:55,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:18:55,562 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:55,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash 371503403, now seen corresponding path program 1 times [2024-10-24 01:18:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461378117] [2024-10-24 01:18:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:18:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461378117] [2024-10-24 01:18:55,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461378117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:55,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99801068] [2024-10-24 01:18:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:55,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:55,787 INFO L87 Difference]: Start difference. First operand 747 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 01:18:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:55,877 INFO L93 Difference]: Finished difference Result 1413 states and 2014 transitions. [2024-10-24 01:18:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 77 [2024-10-24 01:18:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:55,883 INFO L225 Difference]: With dead ends: 1413 [2024-10-24 01:18:55,883 INFO L226 Difference]: Without dead ends: 771 [2024-10-24 01:18:55,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:55,886 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 5 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:55,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 726 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-10-24 01:18:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-10-24 01:18:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 589 states have (on average 1.4023769100169778) internal successors, (826), 592 states have internal predecessors, (826), 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) [2024-10-24 01:18:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1074 transitions. [2024-10-24 01:18:55,936 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1074 transitions. Word has length 77 [2024-10-24 01:18:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:55,936 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1074 transitions. [2024-10-24 01:18:55,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 01:18:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1074 transitions. [2024-10-24 01:18:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:18:55,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:55,938 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] [2024-10-24 01:18:55,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:18:55,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:55,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1261624674, now seen corresponding path program 1 times [2024-10-24 01:18:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751254516] [2024-10-24 01:18:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:18:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:18:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751254516] [2024-10-24 01:18:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751254516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:56,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:18:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960868137] [2024-10-24 01:18:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:56,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:18:56,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:56,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:18:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:18:56,454 INFO L87 Difference]: Start difference. First operand 771 states and 1074 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-10-24 01:18:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:56,722 INFO L93 Difference]: Finished difference Result 1995 states and 2765 transitions. [2024-10-24 01:18:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:18:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 80 [2024-10-24 01:18:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:56,729 INFO L225 Difference]: With dead ends: 1995 [2024-10-24 01:18:56,730 INFO L226 Difference]: Without dead ends: 1329 [2024-10-24 01:18:56,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 01:18:56,732 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 193 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:56,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1404 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-10-24 01:18:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1047. [2024-10-24 01:18:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 792 states have (on average 1.3888888888888888) internal successors, (1100), 797 states have internal predecessors, (1100), 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) [2024-10-24 01:18:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1444 transitions. [2024-10-24 01:18:56,803 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1444 transitions. Word has length 80 [2024-10-24 01:18:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:56,804 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1444 transitions. [2024-10-24 01:18:56,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-10-24 01:18:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1444 transitions. [2024-10-24 01:18:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 01:18:56,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:56,805 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] [2024-10-24 01:18:56,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:18:56,806 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:56,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 203336820, now seen corresponding path program 1 times [2024-10-24 01:18:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:56,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932545081] [2024-10-24 01:18:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:56,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 01:18:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:18:56,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932545081] [2024-10-24 01:18:56,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932545081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:56,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:56,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:18:56,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873449414] [2024-10-24 01:18:56,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:56,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:18:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:18:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:18:56,933 INFO L87 Difference]: Start difference. First operand 1047 states and 1444 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, (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) [2024-10-24 01:18:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:57,016 INFO L93 Difference]: Finished difference Result 1953 states and 2714 transitions. [2024-10-24 01:18:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:18:57,017 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, (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 84 [2024-10-24 01:18:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:57,024 INFO L225 Difference]: With dead ends: 1953 [2024-10-24 01:18:57,024 INFO L226 Difference]: Without dead ends: 1071 [2024-10-24 01:18:57,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:18:57,027 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:57,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 724 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:18:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-10-24 01:18:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2024-10-24 01:18:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 810 states have (on average 1.3802469135802469) internal successors, (1118), 815 states have internal predecessors, (1118), 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) [2024-10-24 01:18:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1462 transitions. [2024-10-24 01:18:57,099 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1462 transitions. Word has length 84 [2024-10-24 01:18:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:57,100 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1462 transitions. [2024-10-24 01:18:57,100 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, (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) [2024-10-24 01:18:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1462 transitions. [2024-10-24 01:18:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-24 01:18:57,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:57,101 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] [2024-10-24 01:18:57,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:18:57,101 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:57,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:57,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1117244196, now seen corresponding path program 1 times [2024-10-24 01:18:57,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371096388] [2024-10-24 01:18:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:18:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 01:18:57,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371096388] [2024-10-24 01:18:57,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371096388] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:57,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:57,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:18:57,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457913365] [2024-10-24 01:18:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:57,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:18:57,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:57,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:18:57,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:18:57,324 INFO L87 Difference]: Start difference. First operand 1071 states and 1462 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 01:18:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:57,563 INFO L93 Difference]: Finished difference Result 1485 states and 2136 transitions. [2024-10-24 01:18:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:18:57,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2024-10-24 01:18:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:57,572 INFO L225 Difference]: With dead ends: 1485 [2024-10-24 01:18:57,572 INFO L226 Difference]: Without dead ends: 1483 [2024-10-24 01:18:57,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:18:57,573 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 259 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:57,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 2482 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2024-10-24 01:18:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1079. [2024-10-24 01:18:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 814 states have (on average 1.3783783783783783) internal successors, (1122), 821 states have internal predecessors, (1122), 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) [2024-10-24 01:18:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1470 transitions. [2024-10-24 01:18:57,674 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1470 transitions. Word has length 83 [2024-10-24 01:18:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:57,674 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1470 transitions. [2024-10-24 01:18:57,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 01:18:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1470 transitions. [2024-10-24 01:18:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 01:18:57,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:57,676 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] [2024-10-24 01:18:57,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:18:57,676 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:57,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1786856787, now seen corresponding path program 1 times [2024-10-24 01:18:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168198383] [2024-10-24 01:18:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:18:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 01:18:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168198383] [2024-10-24 01:18:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168198383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:18:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642106674] [2024-10-24 01:18:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:57,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:18:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:18:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:18:57,813 INFO L87 Difference]: Start difference. First operand 1079 states and 1470 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-10-24 01:18:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:57,999 INFO L93 Difference]: Finished difference Result 1945 states and 2661 transitions. [2024-10-24 01:18:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:18:58,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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 86 [2024-10-24 01:18:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:58,006 INFO L225 Difference]: With dead ends: 1945 [2024-10-24 01:18:58,007 INFO L226 Difference]: Without dead ends: 1113 [2024-10-24 01:18:58,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:18:58,010 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 244 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:58,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1421 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-10-24 01:18:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1071. [2024-10-24 01:18:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 829 states have internal predecessors, (1122), 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) [2024-10-24 01:18:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1446 transitions. [2024-10-24 01:18:58,100 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1446 transitions. Word has length 86 [2024-10-24 01:18:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:58,102 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1446 transitions. [2024-10-24 01:18:58,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-10-24 01:18:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1446 transitions. [2024-10-24 01:18:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 01:18:58,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:58,104 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] [2024-10-24 01:18:58,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:18:58,104 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:58,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash 116448996, now seen corresponding path program 1 times [2024-10-24 01:18:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:58,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54056465] [2024-10-24 01:18:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:18:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 01:18:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 01:18:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54056465] [2024-10-24 01:18:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54056465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:18:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708867877] [2024-10-24 01:18:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:58,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:18:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:18:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:18:58,517 INFO L87 Difference]: Start difference. First operand 1071 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-10-24 01:18:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:58,720 INFO L93 Difference]: Finished difference Result 1911 states and 2591 transitions. [2024-10-24 01:18:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:18:58,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 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 88 [2024-10-24 01:18:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:58,727 INFO L225 Difference]: With dead ends: 1911 [2024-10-24 01:18:58,727 INFO L226 Difference]: Without dead ends: 1067 [2024-10-24 01:18:58,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 01:18:58,730 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 145 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:58,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1513 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:18:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2024-10-24 01:18:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 964. [2024-10-24 01:18:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 737 states have (on average 1.3772048846675713) internal successors, (1015), 747 states have internal predecessors, (1015), 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) [2024-10-24 01:18:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1305 transitions. [2024-10-24 01:18:58,784 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1305 transitions. Word has length 88 [2024-10-24 01:18:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:58,784 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1305 transitions. [2024-10-24 01:18:58,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-10-24 01:18:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1305 transitions. [2024-10-24 01:18:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 01:18:58,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:58,786 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] [2024-10-24 01:18:58,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:18:58,786 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:58,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash -741171965, now seen corresponding path program 1 times [2024-10-24 01:18:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:58,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070647812] [2024-10-24 01:18:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:18:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:18:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:18:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:18:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:18:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:18:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 01:18:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 01:18:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:18:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:18:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:18:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070647812] [2024-10-24 01:18:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070647812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:18:59,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:18:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:18:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538380351] [2024-10-24 01:18:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:18:59,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:18:59,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:18:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:18:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:18:59,167 INFO L87 Difference]: Start difference. First operand 964 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 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) [2024-10-24 01:18:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:18:59,659 INFO L93 Difference]: Finished difference Result 1859 states and 2511 transitions. [2024-10-24 01:18:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:18:59,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 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 89 [2024-10-24 01:18:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:18:59,665 INFO L225 Difference]: With dead ends: 1859 [2024-10-24 01:18:59,665 INFO L226 Difference]: Without dead ends: 1051 [2024-10-24 01:18:59,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:18:59,667 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 659 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:18:59,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1351 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:18:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-10-24 01:18:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1002. [2024-10-24 01:18:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 760 states have (on average 1.3539473684210526) internal successors, (1029), 771 states have internal predecessors, (1029), 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) [2024-10-24 01:18:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1337 transitions. [2024-10-24 01:18:59,752 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1337 transitions. Word has length 89 [2024-10-24 01:18:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:18:59,753 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1337 transitions. [2024-10-24 01:18:59,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 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) [2024-10-24 01:18:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1337 transitions. [2024-10-24 01:18:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:18:59,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:18:59,755 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] [2024-10-24 01:18:59,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:18:59,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:18:59,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:18:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1765724356, now seen corresponding path program 1 times [2024-10-24 01:18:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:18:59,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807944134] [2024-10-24 01:18:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:18:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:18:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:19:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 01:19:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 01:19:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 01:19:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 01:19:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 01:19:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:19:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:19:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807944134] [2024-10-24 01:19:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807944134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:00,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:00,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:19:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047544029] [2024-10-24 01:19:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:00,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:19:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:19:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:19:00,172 INFO L87 Difference]: Start difference. First operand 1002 states and 1337 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 01:19:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:00,592 INFO L93 Difference]: Finished difference Result 1942 states and 2575 transitions. [2024-10-24 01:19:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:19:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2024-10-24 01:19:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:00,599 INFO L225 Difference]: With dead ends: 1942 [2024-10-24 01:19:00,599 INFO L226 Difference]: Without dead ends: 1109 [2024-10-24 01:19:00,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:19:00,602 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 520 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:00,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1339 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:19:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-10-24 01:19:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1024. [2024-10-24 01:19:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 774 states have (on average 1.3372093023255813) internal successors, (1035), 786 states have internal predecessors, (1035), 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) [2024-10-24 01:19:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1349 transitions. [2024-10-24 01:19:00,674 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1349 transitions. Word has length 91 [2024-10-24 01:19:00,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:00,675 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1349 transitions. [2024-10-24 01:19:00,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 01:19:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1349 transitions. [2024-10-24 01:19:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 01:19:00,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:00,676 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] [2024-10-24 01:19:00,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:19:00,677 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:00,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1782988361, now seen corresponding path program 1 times [2024-10-24 01:19:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616614496] [2024-10-24 01:19:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:00,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 01:19:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 01:19:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 01:19:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 01:19:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 01:19:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 01:19:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616614496] [2024-10-24 01:19:00,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616614496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:00,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:00,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:19:00,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786286332] [2024-10-24 01:19:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:00,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:19:00,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:19:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:19:00,779 INFO L87 Difference]: Start difference. First operand 1024 states and 1349 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-24 01:19:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:00,961 INFO L93 Difference]: Finished difference Result 2682 states and 3557 transitions. [2024-10-24 01:19:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:19:00,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 92 [2024-10-24 01:19:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:00,971 INFO L225 Difference]: With dead ends: 2682 [2024-10-24 01:19:00,971 INFO L226 Difference]: Without dead ends: 1905 [2024-10-24 01:19:00,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:19:00,975 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 195 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:00,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1096 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-10-24 01:19:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1734. [2024-10-24 01:19:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1296 states have (on average 1.3356481481481481) internal successors, (1731), 1316 states have internal predecessors, (1731), 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) [2024-10-24 01:19:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2291 transitions. [2024-10-24 01:19:01,088 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2291 transitions. Word has length 92 [2024-10-24 01:19:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:01,089 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2291 transitions. [2024-10-24 01:19:01,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-24 01:19:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2291 transitions. [2024-10-24 01:19:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:19:01,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:01,090 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] [2024-10-24 01:19:01,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:19:01,090 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:01,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash 890629356, now seen corresponding path program 1 times [2024-10-24 01:19:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129458585] [2024-10-24 01:19:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 01:19:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 01:19:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 01:19:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 01:19:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 01:19:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 01:19:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:01,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:01,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129458585] [2024-10-24 01:19:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129458585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:01,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:19:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412079006] [2024-10-24 01:19:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:01,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:19:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:19:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:19:01,194 INFO L87 Difference]: Start difference. First operand 1734 states and 2291 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 01:19:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:01,411 INFO L93 Difference]: Finished difference Result 4412 states and 5861 transitions. [2024-10-24 01:19:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:19:01,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 94 [2024-10-24 01:19:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:01,425 INFO L225 Difference]: With dead ends: 4412 [2024-10-24 01:19:01,426 INFO L226 Difference]: Without dead ends: 2994 [2024-10-24 01:19:01,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:19:01,431 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 202 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:01,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1132 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-10-24 01:19:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2745. [2024-10-24 01:19:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2032 states have (on average 1.3228346456692914) internal successors, (2688), 2063 states have internal predecessors, (2688), 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) [2024-10-24 01:19:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3608 transitions. [2024-10-24 01:19:01,719 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3608 transitions. Word has length 94 [2024-10-24 01:19:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:01,720 INFO L471 AbstractCegarLoop]: Abstraction has 2745 states and 3608 transitions. [2024-10-24 01:19:01,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 01:19:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3608 transitions. [2024-10-24 01:19:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:19:01,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:01,728 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] [2024-10-24 01:19:01,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:19:01,729 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:01,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1142837102, now seen corresponding path program 1 times [2024-10-24 01:19:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:01,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912170425] [2024-10-24 01:19:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 01:19:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:19:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 01:19:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 01:19:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 01:19:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 01:19:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 01:19:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912170425] [2024-10-24 01:19:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912170425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:01,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:19:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910791505] [2024-10-24 01:19:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:01,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:19:01,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:19:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:19:01,830 INFO L87 Difference]: Start difference. First operand 2745 states and 3608 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 01:19:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:02,139 INFO L93 Difference]: Finished difference Result 6428 states and 8486 transitions. [2024-10-24 01:19:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:19:02,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 94 [2024-10-24 01:19:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:02,164 INFO L225 Difference]: With dead ends: 6428 [2024-10-24 01:19:02,164 INFO L226 Difference]: Without dead ends: 4115 [2024-10-24 01:19:02,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:19:02,171 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 196 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:02,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1146 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2024-10-24 01:19:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3942. [2024-10-24 01:19:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 2905 states have (on average 1.3180722891566266) internal successors, (3829), 2949 states have internal predecessors, (3829), 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) [2024-10-24 01:19:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5173 transitions. [2024-10-24 01:19:02,500 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5173 transitions. Word has length 94 [2024-10-24 01:19:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:02,501 INFO L471 AbstractCegarLoop]: Abstraction has 3942 states and 5173 transitions. [2024-10-24 01:19:02,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 01:19:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5173 transitions. [2024-10-24 01:19:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 01:19:02,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:02,503 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] [2024-10-24 01:19:02,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:19:02,504 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:02,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:02,504 INFO L85 PathProgramCache]: Analyzing trace with hash -116500221, now seen corresponding path program 1 times [2024-10-24 01:19:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298904984] [2024-10-24 01:19:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 01:19:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 01:19:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 01:19:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 01:19:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 01:19:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 01:19:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:02,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298904984] [2024-10-24 01:19:02,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298904984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:02,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:02,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:19:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953033732] [2024-10-24 01:19:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:02,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:19:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:19:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:19:02,568 INFO L87 Difference]: Start difference. First operand 3942 states and 5173 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-24 01:19:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:02,839 INFO L93 Difference]: Finished difference Result 7585 states and 9999 transitions. [2024-10-24 01:19:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:19:02,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 95 [2024-10-24 01:19:02,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:02,877 INFO L225 Difference]: With dead ends: 7585 [2024-10-24 01:19:02,878 INFO L226 Difference]: Without dead ends: 3975 [2024-10-24 01:19:02,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:19:02,893 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 6 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:02,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 466 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:19:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2024-10-24 01:19:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3948. [2024-10-24 01:19:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2911 states have (on average 1.3174166952937134) internal successors, (3835), 2955 states have internal predecessors, (3835), 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) [2024-10-24 01:19:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5179 transitions. [2024-10-24 01:19:03,298 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5179 transitions. Word has length 95 [2024-10-24 01:19:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:03,298 INFO L471 AbstractCegarLoop]: Abstraction has 3948 states and 5179 transitions. [2024-10-24 01:19:03,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-24 01:19:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5179 transitions. [2024-10-24 01:19:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-24 01:19:03,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:03,301 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] [2024-10-24 01:19:03,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:19:03,302 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:03,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1006279155, now seen corresponding path program 1 times [2024-10-24 01:19:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:03,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295815927] [2024-10-24 01:19:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 01:19:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:19:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 01:19:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 01:19:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 01:19:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 01:19:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 01:19:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295815927] [2024-10-24 01:19:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295815927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:19:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809901848] [2024-10-24 01:19:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:03,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:19:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:19:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:19:03,420 INFO L87 Difference]: Start difference. First operand 3948 states and 5179 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-24 01:19:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:03,793 INFO L93 Difference]: Finished difference Result 7551 states and 9927 transitions. [2024-10-24 01:19:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:19:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 96 [2024-10-24 01:19:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:03,817 INFO L225 Difference]: With dead ends: 7551 [2024-10-24 01:19:03,818 INFO L226 Difference]: Without dead ends: 3669 [2024-10-24 01:19:03,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:19:03,830 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 78 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:03,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 711 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2024-10-24 01:19:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3606. [2024-10-24 01:19:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2652 states have (on average 1.3273001508295625) internal successors, (3520), 2686 states have internal predecessors, (3520), 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) [2024-10-24 01:19:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4760 transitions. [2024-10-24 01:19:04,195 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4760 transitions. Word has length 96 [2024-10-24 01:19:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:04,195 INFO L471 AbstractCegarLoop]: Abstraction has 3606 states and 4760 transitions. [2024-10-24 01:19:04,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-24 01:19:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4760 transitions. [2024-10-24 01:19:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:19:04,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:04,197 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:04,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 01:19:04,198 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:04,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash 976654501, now seen corresponding path program 1 times [2024-10-24 01:19:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462661547] [2024-10-24 01:19:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 01:19:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 01:19:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 01:19:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 01:19:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 01:19:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 01:19:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462661547] [2024-10-24 01:19:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462661547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:19:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725774423] [2024-10-24 01:19:04,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:04,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:19:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:19:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:19:04,263 INFO L87 Difference]: Start difference. First operand 3606 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-10-24 01:19:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:04,536 INFO L93 Difference]: Finished difference Result 7094 states and 9402 transitions. [2024-10-24 01:19:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:19:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 97 [2024-10-24 01:19:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:04,551 INFO L225 Difference]: With dead ends: 7094 [2024-10-24 01:19:04,551 INFO L226 Difference]: Without dead ends: 3657 [2024-10-24 01:19:04,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:19:04,559 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 6 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:04,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 466 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2024-10-24 01:19:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3616. [2024-10-24 01:19:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 2662 states have (on average 1.3260706235912847) internal successors, (3530), 2696 states have internal predecessors, (3530), 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) [2024-10-24 01:19:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4770 transitions. [2024-10-24 01:19:04,776 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4770 transitions. Word has length 97 [2024-10-24 01:19:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:04,777 INFO L471 AbstractCegarLoop]: Abstraction has 3616 states and 4770 transitions. [2024-10-24 01:19:04,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-10-24 01:19:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4770 transitions. [2024-10-24 01:19:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:19:04,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:04,779 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:04,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 01:19:04,779 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:04,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1105968182, now seen corresponding path program 1 times [2024-10-24 01:19:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831658734] [2024-10-24 01:19:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 01:19:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 01:19:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 01:19:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 01:19:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 01:19:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 01:19:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:19:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831658734] [2024-10-24 01:19:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831658734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:04,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:19:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387344113] [2024-10-24 01:19:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:04,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:19:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:19:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:19:04,945 INFO L87 Difference]: Start difference. First operand 3616 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-24 01:19:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:05,139 INFO L93 Difference]: Finished difference Result 7044 states and 9312 transitions. [2024-10-24 01:19:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:19:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 97 [2024-10-24 01:19:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:05,156 INFO L225 Difference]: With dead ends: 7044 [2024-10-24 01:19:05,157 INFO L226 Difference]: Without dead ends: 3537 [2024-10-24 01:19:05,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:19:05,164 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 60 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:05,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 716 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:19:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2024-10-24 01:19:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 2729. [2024-10-24 01:19:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2009 states have (on average 1.320059731209557) internal successors, (2652), 2028 states have internal predecessors, (2652), 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) [2024-10-24 01:19:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 3590 transitions. [2024-10-24 01:19:05,378 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 3590 transitions. Word has length 97 [2024-10-24 01:19:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:05,378 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 3590 transitions. [2024-10-24 01:19:05,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-24 01:19:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 3590 transitions. [2024-10-24 01:19:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-24 01:19:05,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:05,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:05,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 01:19:05,382 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:05,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1294447064, now seen corresponding path program 1 times [2024-10-24 01:19:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081616680] [2024-10-24 01:19:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:19:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:19:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:19:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:19:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:19:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:19:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 01:19:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 01:19:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-24 01:19:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 01:19:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 01:19:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 01:19:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 01:19:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 01:19:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081616680] [2024-10-24 01:19:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081616680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352902528] [2024-10-24 01:19:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:05,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:05,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:05,659 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) [2024-10-24 01:19:05,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:19:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:05,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 01:19:05,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:19:06,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 01:19:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352902528] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:06,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 22 [2024-10-24 01:19:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752319400] [2024-10-24 01:19:06,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:06,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 01:19:06,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 01:19:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-10-24 01:19:06,556 INFO L87 Difference]: Start difference. First operand 2729 states and 3590 transitions. Second operand has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 20 states have internal predecessors, (221), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-10-24 01:19:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:10,712 INFO L93 Difference]: Finished difference Result 11334 states and 14831 transitions. [2024-10-24 01:19:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-24 01:19:10,712 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 20 states have internal predecessors, (221), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 140 [2024-10-24 01:19:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:10,745 INFO L225 Difference]: With dead ends: 11334 [2024-10-24 01:19:10,745 INFO L226 Difference]: Without dead ends: 8815 [2024-10-24 01:19:10,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1180, Invalid=5300, Unknown=0, NotChecked=0, Total=6480 [2024-10-24 01:19:10,755 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 5571 mSDsluCounter, 3226 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5571 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:10,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5571 Valid, 3568 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2233 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 01:19:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2024-10-24 01:19:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7343. [2024-10-24 01:19:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7343 states, 5386 states have (on average 1.3078351281099145) internal successors, (7044), 5438 states have internal predecessors, (7044), 1259 states have call successors, (1259), 697 states have call predecessors, (1259), 697 states have return successors, (1259), 1207 states have call predecessors, (1259), 1259 states have call successors, (1259) [2024-10-24 01:19:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7343 states to 7343 states and 9562 transitions. [2024-10-24 01:19:11,590 INFO L78 Accepts]: Start accepts. Automaton has 7343 states and 9562 transitions. Word has length 140 [2024-10-24 01:19:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:11,591 INFO L471 AbstractCegarLoop]: Abstraction has 7343 states and 9562 transitions. [2024-10-24 01:19:11,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 20 states have internal predecessors, (221), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-10-24 01:19:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7343 states and 9562 transitions. [2024-10-24 01:19:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 01:19:11,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:11,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:11,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:19:11,801 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,SelfDestructingSolverStorable27 [2024-10-24 01:19:11,801 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:11,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1378533458, now seen corresponding path program 1 times [2024-10-24 01:19:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:11,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474370195] [2024-10-24 01:19:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:19:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 01:19:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 01:19:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 01:19:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 01:19:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 01:19:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 01:19:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 01:19:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 01:19:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 01:19:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 01:19:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-24 01:19:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474370195] [2024-10-24 01:19:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474370195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:19:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:19:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:19:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154895177] [2024-10-24 01:19:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:19:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:19:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:19:11,969 INFO L87 Difference]: Start difference. First operand 7343 states and 9562 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-10-24 01:19:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:13,096 INFO L93 Difference]: Finished difference Result 21325 states and 27878 transitions. [2024-10-24 01:19:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:19:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 143 [2024-10-24 01:19:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:13,151 INFO L225 Difference]: With dead ends: 21325 [2024-10-24 01:19:13,151 INFO L226 Difference]: Without dead ends: 14450 [2024-10-24 01:19:13,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:19:13,171 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 219 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:13,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 2074 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:19:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2024-10-24 01:19:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 12172. [2024-10-24 01:19:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12172 states, 8851 states have (on average 1.3057281663088915) internal successors, (11557), 8941 states have internal predecessors, (11557), 2161 states have call successors, (2161), 1159 states have call predecessors, (2161), 1159 states have return successors, (2161), 2071 states have call predecessors, (2161), 2161 states have call successors, (2161) [2024-10-24 01:19:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12172 states to 12172 states and 15879 transitions. [2024-10-24 01:19:14,221 INFO L78 Accepts]: Start accepts. Automaton has 12172 states and 15879 transitions. Word has length 143 [2024-10-24 01:19:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:14,222 INFO L471 AbstractCegarLoop]: Abstraction has 12172 states and 15879 transitions. [2024-10-24 01:19:14,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-10-24 01:19:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 12172 states and 15879 transitions. [2024-10-24 01:19:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 01:19:14,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:14,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:14,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-24 01:19:14,241 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:14,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -371025756, now seen corresponding path program 1 times [2024-10-24 01:19:14,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:14,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655072157] [2024-10-24 01:19:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 01:19:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 01:19:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 01:19:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 01:19:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 01:19:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 01:19:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-24 01:19:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 01:19:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 01:19:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 01:19:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 01:19:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 01:19:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 01:19:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-24 01:19:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:14,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655072157] [2024-10-24 01:19:14,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655072157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:14,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330395209] [2024-10-24 01:19:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:14,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:14,884 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) [2024-10-24 01:19:14,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:19:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:15,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 01:19:15,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:19:15,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 01:19:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330395209] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 01:19:15,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 11] total 25 [2024-10-24 01:19:15,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087766093] [2024-10-24 01:19:15,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:19:15,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:19:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:19:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2024-10-24 01:19:15,483 INFO L87 Difference]: Start difference. First operand 12172 states and 15879 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 01:19:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:16,981 INFO L93 Difference]: Finished difference Result 23940 states and 31256 transitions. [2024-10-24 01:19:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 01:19:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 143 [2024-10-24 01:19:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:17,040 INFO L225 Difference]: With dead ends: 23940 [2024-10-24 01:19:17,041 INFO L226 Difference]: Without dead ends: 12236 [2024-10-24 01:19:17,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:19:17,070 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 372 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:17,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1424 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:19:17,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2024-10-24 01:19:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 8288. [2024-10-24 01:19:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8288 states, 6061 states have (on average 1.310509816861904) internal successors, (7943), 6116 states have internal predecessors, (7943), 1444 states have call successors, (1444), 782 states have call predecessors, (1444), 782 states have return successors, (1444), 1389 states have call predecessors, (1444), 1444 states have call successors, (1444) [2024-10-24 01:19:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 10831 transitions. [2024-10-24 01:19:17,896 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 10831 transitions. Word has length 143 [2024-10-24 01:19:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:17,896 INFO L471 AbstractCegarLoop]: Abstraction has 8288 states and 10831 transitions. [2024-10-24 01:19:17,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 01:19:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 10831 transitions. [2024-10-24 01:19:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 01:19:17,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:17,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:17,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 01:19:18,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:18,115 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:18,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -297425047, now seen corresponding path program 1 times [2024-10-24 01:19:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112201261] [2024-10-24 01:19:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 01:19:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 01:19:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 01:19:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 01:19:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 01:19:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 01:19:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-24 01:19:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-24 01:19:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-24 01:19:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 01:19:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 01:19:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:19:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 01:19:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 01:19:19,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112201261] [2024-10-24 01:19:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112201261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788462508] [2024-10-24 01:19:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:19,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:19,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:19,128 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) [2024-10-24 01:19:19,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:19:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:19,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 01:19:19,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:19:19,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-24 01:19:19,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788462508] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:19,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:19,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 26 [2024-10-24 01:19:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629869864] [2024-10-24 01:19:19,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:19,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 01:19:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 01:19:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-10-24 01:19:19,871 INFO L87 Difference]: Start difference. First operand 8288 states and 10831 transitions. Second operand has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 24 states have internal predecessors, (251), 10 states have call successors, (41), 5 states have call predecessors, (41), 8 states have return successors, (40), 12 states have call predecessors, (40), 10 states have call successors, (40) [2024-10-24 01:19:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:24,286 INFO L93 Difference]: Finished difference Result 19457 states and 25474 transitions. [2024-10-24 01:19:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-24 01:19:24,287 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 24 states have internal predecessors, (251), 10 states have call successors, (41), 5 states have call predecessors, (41), 8 states have return successors, (40), 12 states have call predecessors, (40), 10 states have call successors, (40) Word has length 144 [2024-10-24 01:19:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:24,336 INFO L225 Difference]: With dead ends: 19457 [2024-10-24 01:19:24,337 INFO L226 Difference]: Without dead ends: 11381 [2024-10-24 01:19:24,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1022, Invalid=4830, Unknown=0, NotChecked=0, Total=5852 [2024-10-24 01:19:24,359 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 1764 mSDsluCounter, 7785 mSDsCounter, 0 mSdLazyCounter, 4209 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 4209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:24,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 8509 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 4209 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 01:19:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11381 states. [2024-10-24 01:19:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11381 to 7634. [2024-10-24 01:19:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7634 states, 5607 states have (on average 1.3051542714464064) internal successors, (7318), 5657 states have internal predecessors, (7318), 1315 states have call successors, (1315), 711 states have call predecessors, (1315), 711 states have return successors, (1315), 1265 states have call predecessors, (1315), 1315 states have call successors, (1315) [2024-10-24 01:19:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 9948 transitions. [2024-10-24 01:19:25,200 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 9948 transitions. Word has length 144 [2024-10-24 01:19:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:25,200 INFO L471 AbstractCegarLoop]: Abstraction has 7634 states and 9948 transitions. [2024-10-24 01:19:25,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 24 states have internal predecessors, (251), 10 states have call successors, (41), 5 states have call predecessors, (41), 8 states have return successors, (40), 12 states have call predecessors, (40), 10 states have call successors, (40) [2024-10-24 01:19:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 9948 transitions. [2024-10-24 01:19:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 01:19:25,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:25,211 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:25,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 01:19:25,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:25,412 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:25,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1487247464, now seen corresponding path program 1 times [2024-10-24 01:19:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187598179] [2024-10-24 01:19:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:19:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:19:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:19:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:19:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:19:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:19:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 01:19:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 01:19:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-24 01:19:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 01:19:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-24 01:19:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-24 01:19:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 01:19:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-24 01:19:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:25,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187598179] [2024-10-24 01:19:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187598179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:25,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493224836] [2024-10-24 01:19:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:25,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:25,611 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) [2024-10-24 01:19:25,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 01:19:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:25,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 01:19:25,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:19:25,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-24 01:19:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493224836] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:26,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-10-24 01:19:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77798037] [2024-10-24 01:19:26,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:26,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 01:19:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:26,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 01:19:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 01:19:26,039 INFO L87 Difference]: Start difference. First operand 7634 states and 9948 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-10-24 01:19:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:27,737 INFO L93 Difference]: Finished difference Result 20686 states and 26760 transitions. [2024-10-24 01:19:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 01:19:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 147 [2024-10-24 01:19:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:27,796 INFO L225 Difference]: With dead ends: 20686 [2024-10-24 01:19:27,796 INFO L226 Difference]: Without dead ends: 13370 [2024-10-24 01:19:27,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-10-24 01:19:27,816 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 354 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:27,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1646 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:19:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13370 states. [2024-10-24 01:19:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13370 to 11554. [2024-10-24 01:19:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11554 states, 8521 states have (on average 1.2912803661542072) internal successors, (11003), 8617 states have internal predecessors, (11003), 1943 states have call successors, (1943), 1089 states have call predecessors, (1943), 1089 states have return successors, (1943), 1847 states have call predecessors, (1943), 1943 states have call successors, (1943) [2024-10-24 01:19:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11554 states to 11554 states and 14889 transitions. [2024-10-24 01:19:28,973 INFO L78 Accepts]: Start accepts. Automaton has 11554 states and 14889 transitions. Word has length 147 [2024-10-24 01:19:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:28,973 INFO L471 AbstractCegarLoop]: Abstraction has 11554 states and 14889 transitions. [2024-10-24 01:19:28,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-10-24 01:19:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 11554 states and 14889 transitions. [2024-10-24 01:19:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-24 01:19:28,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:28,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:29,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 01:19:29,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:29,187 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:29,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1716116480, now seen corresponding path program 1 times [2024-10-24 01:19:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251568281] [2024-10-24 01:19:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:19:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 01:19:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 01:19:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 01:19:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 01:19:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 01:19:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 01:19:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 01:19:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 01:19:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-24 01:19:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 01:19:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 01:19:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251568281] [2024-10-24 01:19:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251568281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953024802] [2024-10-24 01:19:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:29,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:29,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:29,488 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) [2024-10-24 01:19:29,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 01:19:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:29,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-24 01:19:29,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:19:29,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 01:19:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953024802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:30,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:30,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2024-10-24 01:19:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899192443] [2024-10-24 01:19:30,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:30,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 01:19:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 01:19:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:19:30,234 INFO L87 Difference]: Start difference. First operand 11554 states and 14889 transitions. Second operand has 23 states, 23 states have (on average 9.956521739130435) internal successors, (229), 22 states have internal predecessors, (229), 9 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (38), 10 states have call predecessors, (38), 9 states have call successors, (38) [2024-10-24 01:19:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:35,947 INFO L93 Difference]: Finished difference Result 31004 states and 40120 transitions. [2024-10-24 01:19:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-10-24 01:19:35,948 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.956521739130435) internal successors, (229), 22 states have internal predecessors, (229), 9 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (38), 10 states have call predecessors, (38), 9 states have call successors, (38) Word has length 146 [2024-10-24 01:19:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:36,021 INFO L225 Difference]: With dead ends: 31004 [2024-10-24 01:19:36,021 INFO L226 Difference]: Without dead ends: 20408 [2024-10-24 01:19:36,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8536 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2872, Invalid=20080, Unknown=0, NotChecked=0, Total=22952 [2024-10-24 01:19:36,049 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 3101 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 3175 mSolverCounterSat, 1037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3101 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1037 IncrementalHoareTripleChecker+Valid, 3175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:36,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3101 Valid, 5404 Invalid, 4212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1037 Valid, 3175 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 01:19:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20408 states. [2024-10-24 01:19:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20408 to 18078. [2024-10-24 01:19:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18078 states, 13461 states have (on average 1.2799197682193002) internal successors, (17229), 13603 states have internal predecessors, (17229), 2925 states have call successors, (2925), 1691 states have call predecessors, (2925), 1691 states have return successors, (2925), 2783 states have call predecessors, (2925), 2925 states have call successors, (2925) [2024-10-24 01:19:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18078 states to 18078 states and 23079 transitions. [2024-10-24 01:19:38,130 INFO L78 Accepts]: Start accepts. Automaton has 18078 states and 23079 transitions. Word has length 146 [2024-10-24 01:19:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:38,131 INFO L471 AbstractCegarLoop]: Abstraction has 18078 states and 23079 transitions. [2024-10-24 01:19:38,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.956521739130435) internal successors, (229), 22 states have internal predecessors, (229), 9 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (38), 10 states have call predecessors, (38), 9 states have call successors, (38) [2024-10-24 01:19:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 18078 states and 23079 transitions. [2024-10-24 01:19:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-24 01:19:38,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:38,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:38,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 01:19:38,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-24 01:19:38,345 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:38,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash 755167063, now seen corresponding path program 1 times [2024-10-24 01:19:38,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844183933] [2024-10-24 01:19:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:19:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 01:19:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 01:19:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 01:19:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 01:19:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 01:19:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 01:19:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 01:19:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 01:19:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 01:19:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-24 01:19:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 01:19:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-24 01:19:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844183933] [2024-10-24 01:19:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844183933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431379016] [2024-10-24 01:19:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:38,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:38,981 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) [2024-10-24 01:19:38,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 01:19:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:39,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 01:19:39,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 01:19:39,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-24 01:19:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431379016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:39,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-10-24 01:19:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710235725] [2024-10-24 01:19:39,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:39,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 01:19:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 01:19:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-10-24 01:19:39,279 INFO L87 Difference]: Start difference. First operand 18078 states and 23079 transitions. Second operand has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-10-24 01:19:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:42,753 INFO L93 Difference]: Finished difference Result 44168 states and 55824 transitions. [2024-10-24 01:19:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 01:19:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) Word has length 146 [2024-10-24 01:19:42,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:42,872 INFO L225 Difference]: With dead ends: 44168 [2024-10-24 01:19:42,872 INFO L226 Difference]: Without dead ends: 26319 [2024-10-24 01:19:42,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:19:42,915 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 206 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:42,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2956 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:19:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26319 states. [2024-10-24 01:19:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26319 to 17906. [2024-10-24 01:19:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17906 states, 13363 states have (on average 1.2699992516650453) internal successors, (16971), 13505 states have internal predecessors, (16971), 2820 states have call successors, (2820), 1722 states have call predecessors, (2820), 1722 states have return successors, (2820), 2678 states have call predecessors, (2820), 2820 states have call successors, (2820) [2024-10-24 01:19:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 22611 transitions. [2024-10-24 01:19:45,177 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 22611 transitions. Word has length 146 [2024-10-24 01:19:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:45,178 INFO L471 AbstractCegarLoop]: Abstraction has 17906 states and 22611 transitions. [2024-10-24 01:19:45,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-10-24 01:19:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 22611 transitions. [2024-10-24 01:19:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 01:19:45,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:45,189 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:45,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 01:19:45,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:45,394 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:45,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1215574953, now seen corresponding path program 1 times [2024-10-24 01:19:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464686595] [2024-10-24 01:19:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:19:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 01:19:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 01:19:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 01:19:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 01:19:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 01:19:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 01:19:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 01:19:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:45,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-24 01:19:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-24 01:19:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-24 01:19:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-24 01:19:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 01:19:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 01:19:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 01:19:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 01:19:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464686595] [2024-10-24 01:19:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464686595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563273166] [2024-10-24 01:19:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:46,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:46,012 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) [2024-10-24 01:19:46,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 01:19:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:46,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-24 01:19:46,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 01:19:46,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 01:19:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563273166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:47,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2024-10-24 01:19:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600341206] [2024-10-24 01:19:47,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:47,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 01:19:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 01:19:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:19:47,407 INFO L87 Difference]: Start difference. First operand 17906 states and 22611 transitions. Second operand has 28 states, 28 states have (on average 8.392857142857142) internal successors, (235), 28 states have internal predecessors, (235), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 10 states have call predecessors, (43), 10 states have call successors, (43) [2024-10-24 01:19:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:19:55,397 INFO L93 Difference]: Finished difference Result 34220 states and 43354 transitions. [2024-10-24 01:19:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-10-24 01:19:55,397 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.392857142857142) internal successors, (235), 28 states have internal predecessors, (235), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 10 states have call predecessors, (43), 10 states have call successors, (43) Word has length 162 [2024-10-24 01:19:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:19:55,466 INFO L225 Difference]: With dead ends: 34220 [2024-10-24 01:19:55,467 INFO L226 Difference]: Without dead ends: 18701 [2024-10-24 01:19:55,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4250 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2206, Invalid=10004, Unknown=0, NotChecked=0, Total=12210 [2024-10-24 01:19:55,498 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 4731 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 1749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1749 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-24 01:19:55,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 3924 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1749 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-24 01:19:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18701 states. [2024-10-24 01:19:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18701 to 18329. [2024-10-24 01:19:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18329 states, 13690 states have (on average 1.2682249817384952) internal successors, (17362), 13820 states have internal predecessors, (17362), 2851 states have call successors, (2851), 1787 states have call predecessors, (2851), 1787 states have return successors, (2851), 2721 states have call predecessors, (2851), 2851 states have call successors, (2851) [2024-10-24 01:19:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 23064 transitions. [2024-10-24 01:19:58,403 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 23064 transitions. Word has length 162 [2024-10-24 01:19:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:19:58,403 INFO L471 AbstractCegarLoop]: Abstraction has 18329 states and 23064 transitions. [2024-10-24 01:19:58,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.392857142857142) internal successors, (235), 28 states have internal predecessors, (235), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 10 states have call predecessors, (43), 10 states have call successors, (43) [2024-10-24 01:19:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 23064 transitions. [2024-10-24 01:19:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-24 01:19:58,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:19:58,411 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:19:58,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 01:19:58,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:58,612 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:19:58,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:19:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -924119329, now seen corresponding path program 1 times [2024-10-24 01:19:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:19:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128343712] [2024-10-24 01:19:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:19:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:19:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 01:19:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 01:19:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 01:19:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 01:19:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:19:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 01:19:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 01:19:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 01:19:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 01:19:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 01:19:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 01:19:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-24 01:19:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 01:19:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-24 01:19:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-24 01:19:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 01:19:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-24 01:19:59,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:19:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128343712] [2024-10-24 01:19:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128343712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:19:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562621576] [2024-10-24 01:19:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:19:59,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:19:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:19:59,162 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) [2024-10-24 01:19:59,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 01:19:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:19:59,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 01:19:59,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:19:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 35 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 01:19:59,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:19:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-24 01:19:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562621576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:19:59,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:19:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 23 [2024-10-24 01:19:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596537995] [2024-10-24 01:19:59,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:19:59,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 01:19:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:19:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 01:19:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:19:59,688 INFO L87 Difference]: Start difference. First operand 18329 states and 23064 transitions. Second operand has 23 states, 23 states have (on average 10.0) internal successors, (230), 20 states have internal predecessors, (230), 9 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) [2024-10-24 01:20:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:20:03,627 INFO L93 Difference]: Finished difference Result 32703 states and 40903 transitions. [2024-10-24 01:20:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 01:20:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.0) internal successors, (230), 20 states have internal predecessors, (230), 9 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) Word has length 165 [2024-10-24 01:20:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:20:03,709 INFO L225 Difference]: With dead ends: 32703 [2024-10-24 01:20:03,709 INFO L226 Difference]: Without dead ends: 17907 [2024-10-24 01:20:03,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2024-10-24 01:20:03,737 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 1343 mSDsluCounter, 3702 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:20:03,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 4089 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 01:20:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17907 states. [2024-10-24 01:20:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17907 to 16454. [2024-10-24 01:20:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16454 states, 12362 states have (on average 1.2484225853421775) internal successors, (15433), 12472 states have internal predecessors, (15433), 2430 states have call successors, (2430), 1661 states have call predecessors, (2430), 1661 states have return successors, (2430), 2320 states have call predecessors, (2430), 2430 states have call successors, (2430) [2024-10-24 01:20:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16454 states to 16454 states and 20293 transitions. [2024-10-24 01:20:06,306 INFO L78 Accepts]: Start accepts. Automaton has 16454 states and 20293 transitions. Word has length 165 [2024-10-24 01:20:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:20:06,306 INFO L471 AbstractCegarLoop]: Abstraction has 16454 states and 20293 transitions. [2024-10-24 01:20:06,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.0) internal successors, (230), 20 states have internal predecessors, (230), 9 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) [2024-10-24 01:20:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16454 states and 20293 transitions. [2024-10-24 01:20:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-24 01:20:06,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:20:06,314 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-24 01:20:06,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 01:20:06,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-24 01:20:06,514 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:20:06,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:20:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1259522897, now seen corresponding path program 1 times [2024-10-24 01:20:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:20:06,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654776056] [2024-10-24 01:20:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:20:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:20:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 01:20:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:20:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 01:20:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 01:20:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 01:20:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 01:20:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 01:20:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:20:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 01:20:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 01:20:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 01:20:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 01:20:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-24 01:20:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 01:20:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-24 01:20:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-24 01:20:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 01:20:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:20:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-24 01:20:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:20:06,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654776056] [2024-10-24 01:20:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654776056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:20:06,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:20:06,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:20:06,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6879778] [2024-10-24 01:20:06,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:20:06,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:20:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:20:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:20:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:20:06,672 INFO L87 Difference]: Start difference. First operand 16454 states and 20293 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16)