/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:20:58,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:20:58,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:20:58,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:20:58,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:20:58,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:20:58,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:20:58,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:20:58,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:20:58,616 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:20:58,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:20:58,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:20:58,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:20:58,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:20:58,618 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:20:58,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:20:58,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:20:58,619 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:20:58,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:20:58,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:20:58,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:20:58,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:20:58,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:20:58,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:20:58,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:20:58,629 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:20:58,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:20:58,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:20:58,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:20:58,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:20:58,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:20:58,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:20:58,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:20:58,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:20:58,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:20:58,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:20:58,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:20:58,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:20:58,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:20:58,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:20:58,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:20:58,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:20:58,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:20:58,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:20:58,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:20:58,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:20:58,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:20:58,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:20:58,885 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:20:58,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-12-21 13:21:00,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:21:00,499 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:21:00,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-12-21 13:21:00,523 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d8b444f/c71607abaaf64abc9cf64f01b7e4f80a/FLAG729931f00 [2023-12-21 13:21:00,539 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d8b444f/c71607abaaf64abc9cf64f01b7e4f80a [2023-12-21 13:21:00,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:21:00,543 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:21:00,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:21:00,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:21:00,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:21:00,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:00" (1/1) ... [2023-12-21 13:21:00,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea9ad11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:00, skipping insertion in model container [2023-12-21 13:21:00,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:00" (1/1) ... [2023-12-21 13:21:00,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:21:01,001 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2023-12-21 13:21:01,036 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2023-12-21 13:21:01,082 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2023-12-21 13:21:01,113 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2023-12-21 13:21:01,195 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2023-12-21 13:21:01,257 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2023-12-21 13:21:01,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:21:01,435 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:21:01,489 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2023-12-21 13:21:01,503 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2023-12-21 13:21:01,529 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2023-12-21 13:21:01,549 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2023-12-21 13:21:01,607 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2023-12-21 13:21:01,684 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2023-12-21 13:21:01,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:21:01,798 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:21:01,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01 WrapperNode [2023-12-21 13:21:01,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:21:01,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:21:01,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:21:01,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:21:01,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:01,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:01,948 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6033 [2023-12-21 13:21:01,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:21:01,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:21:01,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:21:01,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:21:01,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:01,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:01,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,027 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]. [2023-12-21 13:21:02,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:21:02,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:21:02,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:21:02,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:21:02,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (1/1) ... [2023-12-21 13:21:02,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:21:02,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:02,213 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) [2023-12-21 13:21:02,226 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 [2023-12-21 13:21:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:21:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:21:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:21:02,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:21:02,444 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:21:02,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:21:04,839 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:21:04,904 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:21:04,905 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:21:04,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:04 BoogieIcfgContainer [2023-12-21 13:21:04,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:21:04,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:21:04,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:21:04,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:21:04,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:21:00" (1/3) ... [2023-12-21 13:21:04,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108075a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:04, skipping insertion in model container [2023-12-21 13:21:04,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:01" (2/3) ... [2023-12-21 13:21:04,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108075a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:04, skipping insertion in model container [2023-12-21 13:21:04,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:04" (3/3) ... [2023-12-21 13:21:04,915 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-12-21 13:21:04,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:21:04,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-21 13:21:05,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:21:05,010 INFO L357 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, mHoare=true, 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;@7737ae50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:21:05,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-21 13:21:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 1252 states, 1245 states have (on average 1.8056224899598394) internal successors, (2248), 1251 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 13:21:05,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:05,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:05,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:05,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 966667412, now seen corresponding path program 1 times [2023-12-21 13:21:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643566742] [2023-12-21 13:21:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643566742] [2023-12-21 13:21:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643566742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:05,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359737421] [2023-12-21 13:21:05,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:05,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:05,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:05,581 INFO L87 Difference]: Start difference. First operand has 1252 states, 1245 states have (on average 1.8056224899598394) internal successors, (2248), 1251 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:07,115 INFO L93 Difference]: Finished difference Result 2462 states and 4318 transitions. [2023-12-21 13:21:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:07,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 13:21:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:07,136 INFO L225 Difference]: With dead ends: 2462 [2023-12-21 13:21:07,136 INFO L226 Difference]: Without dead ends: 1549 [2023-12-21 13:21:07,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:07,144 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 7054 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7054 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:07,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7054 Valid, 1477 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:21:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-12-21 13:21:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1543. [2023-12-21 13:21:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1537 states have (on average 1.3565387117761873) internal successors, (2085), 1542 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2085 transitions. [2023-12-21 13:21:07,235 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2085 transitions. Word has length 50 [2023-12-21 13:21:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:07,235 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2085 transitions. [2023-12-21 13:21:07,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2085 transitions. [2023-12-21 13:21:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:21:07,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:07,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:07,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:21:07,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:07,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1129412729, now seen corresponding path program 1 times [2023-12-21 13:21:07,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295635041] [2023-12-21 13:21:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295635041] [2023-12-21 13:21:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295635041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655357221] [2023-12-21 13:21:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:07,442 INFO L87 Difference]: Start difference. First operand 1543 states and 2085 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:08,365 INFO L93 Difference]: Finished difference Result 3168 states and 4337 transitions. [2023-12-21 13:21:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:08,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:21:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:08,373 INFO L225 Difference]: With dead ends: 3168 [2023-12-21 13:21:08,374 INFO L226 Difference]: Without dead ends: 2188 [2023-12-21 13:21:08,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:08,376 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 5058 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 1028 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:21:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2023-12-21 13:21:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2176. [2023-12-21 13:21:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2170 states have (on average 1.3755760368663594) internal successors, (2985), 2175 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2985 transitions. [2023-12-21 13:21:08,427 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2985 transitions. Word has length 51 [2023-12-21 13:21:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:08,427 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 2985 transitions. [2023-12-21 13:21:08,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2985 transitions. [2023-12-21 13:21:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:21:08,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:08,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:21:08,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:08,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1240611768, now seen corresponding path program 1 times [2023-12-21 13:21:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244201646] [2023-12-21 13:21:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244201646] [2023-12-21 13:21:08,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244201646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:08,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:08,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031470871] [2023-12-21 13:21:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:08,541 INFO L87 Difference]: Start difference. First operand 2176 states and 2985 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:09,379 INFO L93 Difference]: Finished difference Result 4519 states and 6279 transitions. [2023-12-21 13:21:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:21:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:09,389 INFO L225 Difference]: With dead ends: 4519 [2023-12-21 13:21:09,392 INFO L226 Difference]: Without dead ends: 3044 [2023-12-21 13:21:09,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:09,403 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 4477 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:09,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 882 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:21:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2023-12-21 13:21:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3034. [2023-12-21 13:21:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3028 states have (on average 1.3768163804491413) internal successors, (4169), 3033 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4169 transitions. [2023-12-21 13:21:09,487 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4169 transitions. Word has length 51 [2023-12-21 13:21:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:09,487 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4169 transitions. [2023-12-21 13:21:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4169 transitions. [2023-12-21 13:21:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:09,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:09,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:21:09,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:09,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -40243798, now seen corresponding path program 1 times [2023-12-21 13:21:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:09,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76415664] [2023-12-21 13:21:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76415664] [2023-12-21 13:21:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76415664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:21:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116371662] [2023-12-21 13:21:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:21:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:21:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:09,774 INFO L87 Difference]: Start difference. First operand 3034 states and 4169 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:11,741 INFO L93 Difference]: Finished difference Result 6106 states and 8639 transitions. [2023-12-21 13:21:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:21:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:11,761 INFO L225 Difference]: With dead ends: 6106 [2023-12-21 13:21:11,761 INFO L226 Difference]: Without dead ends: 5549 [2023-12-21 13:21:11,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:21:11,771 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 4089 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:11,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 2985 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:21:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5549 states. [2023-12-21 13:21:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 3034. [2023-12-21 13:21:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3028 states have (on average 1.3764861294583883) internal successors, (4168), 3033 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4168 transitions. [2023-12-21 13:21:11,867 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4168 transitions. Word has length 52 [2023-12-21 13:21:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:11,868 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4168 transitions. [2023-12-21 13:21:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4168 transitions. [2023-12-21 13:21:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:11,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:11,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:11,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:21:11,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:11,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -185533245, now seen corresponding path program 1 times [2023-12-21 13:21:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341605874] [2023-12-21 13:21:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341605874] [2023-12-21 13:21:12,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341605874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:12,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:21:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536646169] [2023-12-21 13:21:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:21:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:21:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:12,125 INFO L87 Difference]: Start difference. First operand 3034 states and 4168 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:13,954 INFO L93 Difference]: Finished difference Result 4572 states and 6369 transitions. [2023-12-21 13:21:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:21:13,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:13,970 INFO L225 Difference]: With dead ends: 4572 [2023-12-21 13:21:13,970 INFO L226 Difference]: Without dead ends: 4567 [2023-12-21 13:21:13,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:21:13,973 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2687 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 3415 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:13,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 3577 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3415 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 13:21:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2023-12-21 13:21:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3034. [2023-12-21 13:21:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3028 states have (on average 1.3761558784676353) internal successors, (4167), 3033 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4167 transitions. [2023-12-21 13:21:14,063 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4167 transitions. Word has length 52 [2023-12-21 13:21:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:14,063 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4167 transitions. [2023-12-21 13:21:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4167 transitions. [2023-12-21 13:21:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:14,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:14,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:21:14,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:14,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1651109861, now seen corresponding path program 1 times [2023-12-21 13:21:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363824680] [2023-12-21 13:21:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:14,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363824680] [2023-12-21 13:21:14,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363824680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:14,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:14,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:14,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105383010] [2023-12-21 13:21:14,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:14,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:14,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:14,339 INFO L87 Difference]: Start difference. First operand 3034 states and 4167 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:15,651 INFO L93 Difference]: Finished difference Result 5094 states and 7232 transitions. [2023-12-21 13:21:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:21:15,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:15,667 INFO L225 Difference]: With dead ends: 5094 [2023-12-21 13:21:15,668 INFO L226 Difference]: Without dead ends: 4423 [2023-12-21 13:21:15,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:21:15,671 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 3999 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:15,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3999 Valid, 3000 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 13:21:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2023-12-21 13:21:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 3034. [2023-12-21 13:21:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3028 states have (on average 1.3758256274768825) internal successors, (4166), 3033 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4166 transitions. [2023-12-21 13:21:15,747 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4166 transitions. Word has length 52 [2023-12-21 13:21:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:15,748 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4166 transitions. [2023-12-21 13:21:15,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4166 transitions. [2023-12-21 13:21:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:21:15,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:15,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:15,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:21:15,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:15,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1538413769, now seen corresponding path program 1 times [2023-12-21 13:21:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:15,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350004264] [2023-12-21 13:21:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:15,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:15,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350004264] [2023-12-21 13:21:15,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350004264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:15,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093506738] [2023-12-21 13:21:15,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:15,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:15,832 INFO L87 Difference]: Start difference. First operand 3034 states and 4166 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:15,891 INFO L93 Difference]: Finished difference Result 3990 states and 5631 transitions. [2023-12-21 13:21:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:15,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:21:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:15,901 INFO L225 Difference]: With dead ends: 3990 [2023-12-21 13:21:15,901 INFO L226 Difference]: Without dead ends: 3087 [2023-12-21 13:21:15,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:15,904 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 579 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:15,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1783 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2023-12-21 13:21:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3085. [2023-12-21 13:21:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 3079 states have (on average 1.3842156544332576) internal successors, (4262), 3084 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4262 transitions. [2023-12-21 13:21:15,954 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4262 transitions. Word has length 53 [2023-12-21 13:21:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:15,954 INFO L495 AbstractCegarLoop]: Abstraction has 3085 states and 4262 transitions. [2023-12-21 13:21:15,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4262 transitions. [2023-12-21 13:21:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:21:15,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:15,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:21:15,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:15,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash -651733059, now seen corresponding path program 1 times [2023-12-21 13:21:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041987956] [2023-12-21 13:21:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041987956] [2023-12-21 13:21:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041987956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682072990] [2023-12-21 13:21:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,016 INFO L87 Difference]: Start difference. First operand 3085 states and 4262 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:16,073 INFO L93 Difference]: Finished difference Result 4726 states and 6796 transitions. [2023-12-21 13:21:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:21:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:16,091 INFO L225 Difference]: With dead ends: 4726 [2023-12-21 13:21:16,092 INFO L226 Difference]: Without dead ends: 3507 [2023-12-21 13:21:16,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,094 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 577 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:16,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1734 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2023-12-21 13:21:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3505. [2023-12-21 13:21:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3499 states have (on average 1.4118319519862819) internal successors, (4940), 3504 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4940 transitions. [2023-12-21 13:21:16,167 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4940 transitions. Word has length 53 [2023-12-21 13:21:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:16,168 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4940 transitions. [2023-12-21 13:21:16,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4940 transitions. [2023-12-21 13:21:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:21:16,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:16,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:16,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:21:16,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:16,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash 408369717, now seen corresponding path program 1 times [2023-12-21 13:21:16,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:16,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105062837] [2023-12-21 13:21:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105062837] [2023-12-21 13:21:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105062837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:16,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573829985] [2023-12-21 13:21:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:16,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,230 INFO L87 Difference]: Start difference. First operand 3505 states and 4940 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:16,347 INFO L93 Difference]: Finished difference Result 7604 states and 10991 transitions. [2023-12-21 13:21:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:16,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:21:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:16,356 INFO L225 Difference]: With dead ends: 7604 [2023-12-21 13:21:16,356 INFO L226 Difference]: Without dead ends: 5152 [2023-12-21 13:21:16,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,361 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 649 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:16,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1959 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2023-12-21 13:21:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 5146. [2023-12-21 13:21:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5140 states have (on average 1.4134241245136188) internal successors, (7265), 5145 states have internal predecessors, (7265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7265 transitions. [2023-12-21 13:21:16,436 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7265 transitions. Word has length 53 [2023-12-21 13:21:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:16,436 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7265 transitions. [2023-12-21 13:21:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7265 transitions. [2023-12-21 13:21:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:21:16,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:16,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:16,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:21:16,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:16,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 888209781, now seen corresponding path program 1 times [2023-12-21 13:21:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516120435] [2023-12-21 13:21:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:16,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:16,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516120435] [2023-12-21 13:21:16,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516120435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:16,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:16,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127273177] [2023-12-21 13:21:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:16,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:16,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,483 INFO L87 Difference]: Start difference. First operand 5146 states and 7265 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:16,597 INFO L93 Difference]: Finished difference Result 9592 states and 13740 transitions. [2023-12-21 13:21:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 13:21:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:16,607 INFO L225 Difference]: With dead ends: 9592 [2023-12-21 13:21:16,607 INFO L226 Difference]: Without dead ends: 5407 [2023-12-21 13:21:16,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,613 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 848 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:16,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1283 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2023-12-21 13:21:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 4342. [2023-12-21 13:21:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 4337 states have (on average 1.4251786949504266) internal successors, (6181), 4341 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 6181 transitions. [2023-12-21 13:21:16,681 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 6181 transitions. Word has length 54 [2023-12-21 13:21:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:16,681 INFO L495 AbstractCegarLoop]: Abstraction has 4342 states and 6181 transitions. [2023-12-21 13:21:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 6181 transitions. [2023-12-21 13:21:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:21:16,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:16,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:21:16,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:16,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash -290391896, now seen corresponding path program 1 times [2023-12-21 13:21:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807307535] [2023-12-21 13:21:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:16,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807307535] [2023-12-21 13:21:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807307535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:16,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:16,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:16,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890645091] [2023-12-21 13:21:16,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:16,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:16,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,731 INFO L87 Difference]: Start difference. First operand 4342 states and 6181 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:16,827 INFO L93 Difference]: Finished difference Result 8335 states and 12072 transitions. [2023-12-21 13:21:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 13:21:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:16,835 INFO L225 Difference]: With dead ends: 8335 [2023-12-21 13:21:16,835 INFO L226 Difference]: Without dead ends: 4678 [2023-12-21 13:21:16,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,839 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 659 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:16,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1014 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2023-12-21 13:21:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3774. [2023-12-21 13:21:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3770 states have (on average 1.4347480106100796) internal successors, (5409), 3773 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5409 transitions. [2023-12-21 13:21:16,891 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5409 transitions. Word has length 54 [2023-12-21 13:21:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:16,891 INFO L495 AbstractCegarLoop]: Abstraction has 3774 states and 5409 transitions. [2023-12-21 13:21:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5409 transitions. [2023-12-21 13:21:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:21:16,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:16,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:16,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:21:16,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:16,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash -364061502, now seen corresponding path program 1 times [2023-12-21 13:21:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284655069] [2023-12-21 13:21:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284655069] [2023-12-21 13:21:16,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284655069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:16,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534071568] [2023-12-21 13:21:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:16,938 INFO L87 Difference]: Start difference. First operand 3774 states and 5409 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:17,036 INFO L93 Difference]: Finished difference Result 7568 states and 11011 transitions. [2023-12-21 13:21:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 13:21:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:17,048 INFO L225 Difference]: With dead ends: 7568 [2023-12-21 13:21:17,048 INFO L226 Difference]: Without dead ends: 4108 [2023-12-21 13:21:17,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:17,053 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 552 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:17,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 915 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2023-12-21 13:21:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3303. [2023-12-21 13:21:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3299 states have (on average 1.4483176720218247) internal successors, (4778), 3302 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4778 transitions. [2023-12-21 13:21:17,101 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4778 transitions. Word has length 54 [2023-12-21 13:21:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:17,101 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 4778 transitions. [2023-12-21 13:21:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4778 transitions. [2023-12-21 13:21:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:21:17,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:17,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:17,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:21:17,105 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:17,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1325150352, now seen corresponding path program 1 times [2023-12-21 13:21:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287417529] [2023-12-21 13:21:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:18,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287417529] [2023-12-21 13:21:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287417529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:18,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 13:21:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951736445] [2023-12-21 13:21:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:21:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:21:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:21:18,140 INFO L87 Difference]: Start difference. First operand 3303 states and 4778 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:20,565 INFO L93 Difference]: Finished difference Result 6716 states and 9713 transitions. [2023-12-21 13:21:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:21:20,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 13:21:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:20,575 INFO L225 Difference]: With dead ends: 6716 [2023-12-21 13:21:20,575 INFO L226 Difference]: Without dead ends: 6712 [2023-12-21 13:21:20,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:21:20,578 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 4362 mSDsluCounter, 7618 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 8341 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:20,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 8341 Invalid, 3367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3357 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:21:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2023-12-21 13:21:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 3315. [2023-12-21 13:21:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3311 states have (on average 1.4482029598308668) internal successors, (4795), 3314 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4795 transitions. [2023-12-21 13:21:20,666 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4795 transitions. Word has length 55 [2023-12-21 13:21:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:20,666 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4795 transitions. [2023-12-21 13:21:20,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4795 transitions. [2023-12-21 13:21:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:21:20,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:20,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:21:20,668 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -548611186, now seen corresponding path program 1 times [2023-12-21 13:21:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398636389] [2023-12-21 13:21:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:21,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398636389] [2023-12-21 13:21:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398636389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:21:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711224862] [2023-12-21 13:21:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:21:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:21:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:21:21,082 INFO L87 Difference]: Start difference. First operand 3315 states and 4795 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:21,955 INFO L93 Difference]: Finished difference Result 7107 states and 10317 transitions. [2023-12-21 13:21:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:21:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 13:21:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:21,968 INFO L225 Difference]: With dead ends: 7107 [2023-12-21 13:21:21,968 INFO L226 Difference]: Without dead ends: 7011 [2023-12-21 13:21:21,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:21:21,972 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 4857 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 2968 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2023-12-21 13:21:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 3268. [2023-12-21 13:21:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3266 states have (on average 1.4500918554807103) internal successors, (4736), 3267 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 4736 transitions. [2023-12-21 13:21:22,054 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 4736 transitions. Word has length 55 [2023-12-21 13:21:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:22,054 INFO L495 AbstractCegarLoop]: Abstraction has 3268 states and 4736 transitions. [2023-12-21 13:21:22,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 4736 transitions. [2023-12-21 13:21:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:21:22,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:22,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:22,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:21:22,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:22,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2003453, now seen corresponding path program 1 times [2023-12-21 13:21:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:22,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296960774] [2023-12-21 13:21:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:22,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296960774] [2023-12-21 13:21:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296960774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:21:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716973173] [2023-12-21 13:21:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:21:22,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:21:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:22,767 INFO L87 Difference]: Start difference. First operand 3268 states and 4736 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:24,388 INFO L93 Difference]: Finished difference Result 6333 states and 9174 transitions. [2023-12-21 13:21:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:21:24,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 13:21:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:24,395 INFO L225 Difference]: With dead ends: 6333 [2023-12-21 13:21:24,395 INFO L226 Difference]: Without dead ends: 6256 [2023-12-21 13:21:24,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:21:24,398 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2450 mSDsluCounter, 5108 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2450 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:24,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2450 Valid, 5766 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:21:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2023-12-21 13:21:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 3259. [2023-12-21 13:21:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3258 states have (on average 1.4499693063228976) internal successors, (4724), 3258 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4724 transitions. [2023-12-21 13:21:24,449 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4724 transitions. Word has length 56 [2023-12-21 13:21:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:24,449 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 4724 transitions. [2023-12-21 13:21:24,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4724 transitions. [2023-12-21 13:21:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:21:24,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:24,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:21:24,452 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:24,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1814443561, now seen corresponding path program 1 times [2023-12-21 13:21:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987067197] [2023-12-21 13:21:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:24,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987067197] [2023-12-21 13:21:24,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987067197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:24,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:24,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3688820] [2023-12-21 13:21:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:24,523 INFO L87 Difference]: Start difference. First operand 3259 states and 4724 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:24,606 INFO L93 Difference]: Finished difference Result 10216 states and 15117 transitions. [2023-12-21 13:21:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:21:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:24,615 INFO L225 Difference]: With dead ends: 10216 [2023-12-21 13:21:24,616 INFO L226 Difference]: Without dead ends: 7494 [2023-12-21 13:21:24,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:24,620 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1652 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 1039 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2023-12-21 13:21:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 5678. [2023-12-21 13:21:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5677 states have (on average 1.447771710410428) internal successors, (8219), 5677 states have internal predecessors, (8219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 8219 transitions. [2023-12-21 13:21:24,694 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 8219 transitions. Word has length 62 [2023-12-21 13:21:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:24,694 INFO L495 AbstractCegarLoop]: Abstraction has 5678 states and 8219 transitions. [2023-12-21 13:21:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 8219 transitions. [2023-12-21 13:21:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:21:24,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:24,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:24,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:21:24,697 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:24,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 97835072, now seen corresponding path program 1 times [2023-12-21 13:21:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076808355] [2023-12-21 13:21:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:24,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076808355] [2023-12-21 13:21:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076808355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:24,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116793597] [2023-12-21 13:21:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:24,802 INFO L87 Difference]: Start difference. First operand 5678 states and 8219 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:24,884 INFO L93 Difference]: Finished difference Result 8910 states and 12938 transitions. [2023-12-21 13:21:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 13:21:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:24,889 INFO L225 Difference]: With dead ends: 8910 [2023-12-21 13:21:24,889 INFO L226 Difference]: Without dead ends: 3748 [2023-12-21 13:21:24,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:24,894 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 969 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:24,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 847 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2023-12-21 13:21:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3744. [2023-12-21 13:21:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.4218541277050494) internal successors, (5322), 3743 states have internal predecessors, (5322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5322 transitions. [2023-12-21 13:21:24,936 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5322 transitions. Word has length 63 [2023-12-21 13:21:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:24,936 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5322 transitions. [2023-12-21 13:21:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5322 transitions. [2023-12-21 13:21:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:21:24,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:24,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:21:24,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:24,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -943856178, now seen corresponding path program 1 times [2023-12-21 13:21:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179515654] [2023-12-21 13:21:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179515654] [2023-12-21 13:21:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179515654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150305263] [2023-12-21 13:21:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:25,019 INFO L87 Difference]: Start difference. First operand 3744 states and 5322 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:25,080 INFO L93 Difference]: Finished difference Result 9886 states and 14248 transitions. [2023-12-21 13:21:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 13:21:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:25,089 INFO L225 Difference]: With dead ends: 9886 [2023-12-21 13:21:25,089 INFO L226 Difference]: Without dead ends: 6636 [2023-12-21 13:21:25,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:25,094 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 327 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:25,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 810 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2023-12-21 13:21:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6218. [2023-12-21 13:21:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6217 states have (on average 1.4272156988901399) internal successors, (8873), 6217 states have internal predecessors, (8873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8873 transitions. [2023-12-21 13:21:25,167 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8873 transitions. Word has length 65 [2023-12-21 13:21:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:25,167 INFO L495 AbstractCegarLoop]: Abstraction has 6218 states and 8873 transitions. [2023-12-21 13:21:25,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8873 transitions. [2023-12-21 13:21:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:21:25,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:25,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:25,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:21:25,170 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:25,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:25,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1925895447, now seen corresponding path program 1 times [2023-12-21 13:21:25,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:25,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217424509] [2023-12-21 13:21:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:25,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:25,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217424509] [2023-12-21 13:21:25,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217424509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:25,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:25,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:25,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393139830] [2023-12-21 13:21:25,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:25,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:25,244 INFO L87 Difference]: Start difference. First operand 6218 states and 8873 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:25,320 INFO L93 Difference]: Finished difference Result 17038 states and 24467 transitions. [2023-12-21 13:21:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 13:21:25,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:25,334 INFO L225 Difference]: With dead ends: 17038 [2023-12-21 13:21:25,334 INFO L226 Difference]: Without dead ends: 11314 [2023-12-21 13:21:25,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:25,342 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 279 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:25,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 837 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11314 states. [2023-12-21 13:21:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11314 to 10480. [2023-12-21 13:21:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 1.4238954098673537) internal successors, (14921), 10479 states have internal predecessors, (14921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 14921 transitions. [2023-12-21 13:21:25,508 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 14921 transitions. Word has length 65 [2023-12-21 13:21:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:25,509 INFO L495 AbstractCegarLoop]: Abstraction has 10480 states and 14921 transitions. [2023-12-21 13:21:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 14921 transitions. [2023-12-21 13:21:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:21:25,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:25,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:25,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:21:25,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:25,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash 721481883, now seen corresponding path program 1 times [2023-12-21 13:21:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65628942] [2023-12-21 13:21:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65628942] [2023-12-21 13:21:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65628942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109909968] [2023-12-21 13:21:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:25,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:25,695 INFO L87 Difference]: Start difference. First operand 10480 states and 14921 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:25,806 INFO L93 Difference]: Finished difference Result 22100 states and 31013 transitions. [2023-12-21 13:21:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:21:25,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 13:21:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:25,833 INFO L225 Difference]: With dead ends: 22100 [2023-12-21 13:21:25,834 INFO L226 Difference]: Without dead ends: 22098 [2023-12-21 13:21:25,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:25,842 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 619 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:25,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2301 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22098 states. [2023-12-21 13:21:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22098 to 11368. [2023-12-21 13:21:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11368 states, 11367 states have (on average 1.3907803290226093) internal successors, (15809), 11367 states have internal predecessors, (15809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 15809 transitions. [2023-12-21 13:21:26,025 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 15809 transitions. Word has length 67 [2023-12-21 13:21:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:26,025 INFO L495 AbstractCegarLoop]: Abstraction has 11368 states and 15809 transitions. [2023-12-21 13:21:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,025 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 15809 transitions. [2023-12-21 13:21:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:21:26,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:26,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:21:26,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:26,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1011663334, now seen corresponding path program 1 times [2023-12-21 13:21:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513099201] [2023-12-21 13:21:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:26,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513099201] [2023-12-21 13:21:26,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513099201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:26,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828414907] [2023-12-21 13:21:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:26,076 INFO L87 Difference]: Start difference. First operand 11368 states and 15809 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:26,238 INFO L93 Difference]: Finished difference Result 30688 states and 42797 transitions. [2023-12-21 13:21:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-21 13:21:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:26,258 INFO L225 Difference]: With dead ends: 30688 [2023-12-21 13:21:26,259 INFO L226 Difference]: Without dead ends: 19802 [2023-12-21 13:21:26,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:26,266 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 306 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:26,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 764 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19802 states. [2023-12-21 13:21:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19802 to 19504. [2023-12-21 13:21:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19504 states, 19503 states have (on average 1.3663026201097268) internal successors, (26647), 19503 states have internal predecessors, (26647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19504 states to 19504 states and 26647 transitions. [2023-12-21 13:21:26,531 INFO L78 Accepts]: Start accepts. Automaton has 19504 states and 26647 transitions. Word has length 68 [2023-12-21 13:21:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:26,531 INFO L495 AbstractCegarLoop]: Abstraction has 19504 states and 26647 transitions. [2023-12-21 13:21:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19504 states and 26647 transitions. [2023-12-21 13:21:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:21:26,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:26,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:26,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:21:26,534 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:26,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1324071959, now seen corresponding path program 1 times [2023-12-21 13:21:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750748527] [2023-12-21 13:21:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:26,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:26,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750748527] [2023-12-21 13:21:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750748527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:26,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:26,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72200485] [2023-12-21 13:21:26,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:26,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:26,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:26,618 INFO L87 Difference]: Start difference. First operand 19504 states and 26647 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:26,758 INFO L93 Difference]: Finished difference Result 34338 states and 47085 transitions. [2023-12-21 13:21:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-21 13:21:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:26,796 INFO L225 Difference]: With dead ends: 34338 [2023-12-21 13:21:26,797 INFO L226 Difference]: Without dead ends: 28084 [2023-12-21 13:21:26,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:26,813 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1065 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:26,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1257 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28084 states. [2023-12-21 13:21:27,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28084 to 24457. [2023-12-21 13:21:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24457 states, 24456 states have (on average 1.361465489041544) internal successors, (33296), 24456 states have internal predecessors, (33296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24457 states to 24457 states and 33296 transitions. [2023-12-21 13:21:27,333 INFO L78 Accepts]: Start accepts. Automaton has 24457 states and 33296 transitions. Word has length 72 [2023-12-21 13:21:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:27,334 INFO L495 AbstractCegarLoop]: Abstraction has 24457 states and 33296 transitions. [2023-12-21 13:21:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 24457 states and 33296 transitions. [2023-12-21 13:21:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:21:27,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:27,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:21:27,339 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:27,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -443814493, now seen corresponding path program 1 times [2023-12-21 13:21:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987540956] [2023-12-21 13:21:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:27,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987540956] [2023-12-21 13:21:27,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987540956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:27,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:27,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140227424] [2023-12-21 13:21:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:27,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:27,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:27,456 INFO L87 Difference]: Start difference. First operand 24457 states and 33296 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:27,614 INFO L93 Difference]: Finished difference Result 37658 states and 51489 transitions. [2023-12-21 13:21:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-21 13:21:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:27,659 INFO L225 Difference]: With dead ends: 37658 [2023-12-21 13:21:27,659 INFO L226 Difference]: Without dead ends: 31404 [2023-12-21 13:21:27,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:27,766 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1074 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:27,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1273 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2023-12-21 13:21:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 29410. [2023-12-21 13:21:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29410 states, 29409 states have (on average 1.3582576762215648) internal successors, (39945), 29409 states have internal predecessors, (39945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29410 states to 29410 states and 39945 transitions. [2023-12-21 13:21:28,275 INFO L78 Accepts]: Start accepts. Automaton has 29410 states and 39945 transitions. Word has length 73 [2023-12-21 13:21:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:28,275 INFO L495 AbstractCegarLoop]: Abstraction has 29410 states and 39945 transitions. [2023-12-21 13:21:28,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 29410 states and 39945 transitions. [2023-12-21 13:21:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:21:28,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:28,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:21:28,278 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:28,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2082299995, now seen corresponding path program 1 times [2023-12-21 13:21:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:28,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821594608] [2023-12-21 13:21:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:28,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821594608] [2023-12-21 13:21:28,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821594608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:28,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624856644] [2023-12-21 13:21:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:28,431 INFO L87 Difference]: Start difference. First operand 29410 states and 39945 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:28,602 INFO L93 Difference]: Finished difference Result 42674 states and 58121 transitions. [2023-12-21 13:21:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-21 13:21:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:28,651 INFO L225 Difference]: With dead ends: 42674 [2023-12-21 13:21:28,652 INFO L226 Difference]: Without dead ends: 36380 [2023-12-21 13:21:28,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:28,668 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 978 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:28,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1380 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36380 states. [2023-12-21 13:21:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36380 to 34386. [2023-12-21 13:21:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34386 states, 34385 states have (on average 1.3549222044496148) internal successors, (46589), 34385 states have internal predecessors, (46589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34386 states to 34386 states and 46589 transitions. [2023-12-21 13:21:29,267 INFO L78 Accepts]: Start accepts. Automaton has 34386 states and 46589 transitions. Word has length 73 [2023-12-21 13:21:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:29,268 INFO L495 AbstractCegarLoop]: Abstraction has 34386 states and 46589 transitions. [2023-12-21 13:21:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 34386 states and 46589 transitions. [2023-12-21 13:21:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:21:29,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:29,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:21:29,272 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1153445703, now seen corresponding path program 1 times [2023-12-21 13:21:29,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929831504] [2023-12-21 13:21:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:29,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929831504] [2023-12-21 13:21:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929831504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:29,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301768241] [2023-12-21 13:21:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:29,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:29,401 INFO L87 Difference]: Start difference. First operand 34386 states and 46589 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:29,689 INFO L93 Difference]: Finished difference Result 47308 states and 64228 transitions. [2023-12-21 13:21:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:29,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-21 13:21:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:29,739 INFO L225 Difference]: With dead ends: 47308 [2023-12-21 13:21:29,739 INFO L226 Difference]: Without dead ends: 36102 [2023-12-21 13:21:29,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:29,754 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1049 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:29,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1257 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36102 states. [2023-12-21 13:21:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36102 to 34110. [2023-12-21 13:21:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34110 states, 34109 states have (on average 1.3523996599138057) internal successors, (46129), 34109 states have internal predecessors, (46129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34110 states to 34110 states and 46129 transitions. [2023-12-21 13:21:30,143 INFO L78 Accepts]: Start accepts. Automaton has 34110 states and 46129 transitions. Word has length 80 [2023-12-21 13:21:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:30,143 INFO L495 AbstractCegarLoop]: Abstraction has 34110 states and 46129 transitions. [2023-12-21 13:21:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 34110 states and 46129 transitions. [2023-12-21 13:21:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:21:30,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:30,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:30,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:21:30,147 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:30,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1749950085, now seen corresponding path program 1 times [2023-12-21 13:21:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519780635] [2023-12-21 13:21:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:30,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:30,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519780635] [2023-12-21 13:21:30,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519780635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:30,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:30,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:30,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223345492] [2023-12-21 13:21:30,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:30,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:30,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:30,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:30,307 INFO L87 Difference]: Start difference. First operand 34110 states and 46129 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:30,625 INFO L93 Difference]: Finished difference Result 47032 states and 63768 transitions. [2023-12-21 13:21:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:30,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-21 13:21:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:30,676 INFO L225 Difference]: With dead ends: 47032 [2023-12-21 13:21:30,677 INFO L226 Difference]: Without dead ends: 35826 [2023-12-21 13:21:30,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:30,695 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1064 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:30,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1253 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35826 states. [2023-12-21 13:21:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35826 to 33834. [2023-12-21 13:21:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33834 states, 33833 states have (on average 1.3498359589749653) internal successors, (45669), 33833 states have internal predecessors, (45669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33834 states to 33834 states and 45669 transitions. [2023-12-21 13:21:31,154 INFO L78 Accepts]: Start accepts. Automaton has 33834 states and 45669 transitions. Word has length 80 [2023-12-21 13:21:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:31,155 INFO L495 AbstractCegarLoop]: Abstraction has 33834 states and 45669 transitions. [2023-12-21 13:21:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 33834 states and 45669 transitions. [2023-12-21 13:21:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:21:31,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:31,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:21:31,159 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:31,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash -728575796, now seen corresponding path program 1 times [2023-12-21 13:21:31,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547062975] [2023-12-21 13:21:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547062975] [2023-12-21 13:21:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547062975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:31,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600471468] [2023-12-21 13:21:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:31,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:31,418 INFO L87 Difference]: Start difference. First operand 33834 states and 45669 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:32,053 INFO L93 Difference]: Finished difference Result 41934 states and 56479 transitions. [2023-12-21 13:21:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:21:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:21:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:32,109 INFO L225 Difference]: With dead ends: 41934 [2023-12-21 13:21:32,110 INFO L226 Difference]: Without dead ends: 41386 [2023-12-21 13:21:32,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:32,126 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2257 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:32,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 702 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41386 states. [2023-12-21 13:21:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41386 to 33833. [2023-12-21 13:21:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33833 states, 33832 states have (on average 1.3497871837313786) internal successors, (45666), 33832 states have internal predecessors, (45666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33833 states to 33833 states and 45666 transitions. [2023-12-21 13:21:32,704 INFO L78 Accepts]: Start accepts. Automaton has 33833 states and 45666 transitions. Word has length 81 [2023-12-21 13:21:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 33833 states and 45666 transitions. [2023-12-21 13:21:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 33833 states and 45666 transitions. [2023-12-21 13:21:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:21:32,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:32,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:32,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:21:32,710 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:32,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1496981479, now seen corresponding path program 1 times [2023-12-21 13:21:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:32,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561191903] [2023-12-21 13:21:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:32,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:32,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561191903] [2023-12-21 13:21:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561191903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:32,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344253000] [2023-12-21 13:21:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:32,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:32,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:32,840 INFO L87 Difference]: Start difference. First operand 33833 states and 45666 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:33,498 INFO L93 Difference]: Finished difference Result 41933 states and 56476 transitions. [2023-12-21 13:21:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:21:33,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:21:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:33,555 INFO L225 Difference]: With dead ends: 41933 [2023-12-21 13:21:33,555 INFO L226 Difference]: Without dead ends: 41385 [2023-12-21 13:21:33,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:33,571 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 2252 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:33,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 700 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41385 states. [2023-12-21 13:21:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41385 to 33832. [2023-12-21 13:21:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33832 states, 33831 states have (on average 1.3497384056043273) internal successors, (45663), 33831 states have internal predecessors, (45663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33832 states to 33832 states and 45663 transitions. [2023-12-21 13:21:34,173 INFO L78 Accepts]: Start accepts. Automaton has 33832 states and 45663 transitions. Word has length 81 [2023-12-21 13:21:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:34,173 INFO L495 AbstractCegarLoop]: Abstraction has 33832 states and 45663 transitions. [2023-12-21 13:21:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 33832 states and 45663 transitions. [2023-12-21 13:21:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:21:34,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:34,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:34,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:21:34,181 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:34,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1436824204, now seen corresponding path program 1 times [2023-12-21 13:21:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476614636] [2023-12-21 13:21:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:34,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:21:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476614636] [2023-12-21 13:21:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476614636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:21:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605703010] [2023-12-21 13:21:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:21:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:21:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:34,398 INFO L87 Difference]: Start difference. First operand 33832 states and 45663 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:35,437 INFO L93 Difference]: Finished difference Result 89739 states and 119462 transitions. [2023-12-21 13:21:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:21:35,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 13:21:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:35,512 INFO L225 Difference]: With dead ends: 89739 [2023-12-21 13:21:35,512 INFO L226 Difference]: Without dead ends: 74212 [2023-12-21 13:21:35,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:21:35,537 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 2090 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:35,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1589 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:21:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74212 states. [2023-12-21 13:21:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74212 to 33812. [2023-12-21 13:21:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33812 states, 33811 states have (on average 1.3498565555588418) internal successors, (45640), 33811 states have internal predecessors, (45640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33812 states to 33812 states and 45640 transitions. [2023-12-21 13:21:36,166 INFO L78 Accepts]: Start accepts. Automaton has 33812 states and 45640 transitions. Word has length 87 [2023-12-21 13:21:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:36,166 INFO L495 AbstractCegarLoop]: Abstraction has 33812 states and 45640 transitions. [2023-12-21 13:21:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33812 states and 45640 transitions. [2023-12-21 13:21:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:21:36,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:36,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:36,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:21:36,174 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:36,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1871965660, now seen corresponding path program 1 times [2023-12-21 13:21:36,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:36,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408570018] [2023-12-21 13:21:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:36,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:36,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408570018] [2023-12-21 13:21:36,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408570018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:36,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:21:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14975285] [2023-12-21 13:21:36,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:36,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:21:36,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:21:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:36,517 INFO L87 Difference]: Start difference. First operand 33812 states and 45640 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:37,618 INFO L93 Difference]: Finished difference Result 85795 states and 113878 transitions. [2023-12-21 13:21:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:21:37,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:21:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:37,684 INFO L225 Difference]: With dead ends: 85795 [2023-12-21 13:21:37,684 INFO L226 Difference]: Without dead ends: 70289 [2023-12-21 13:21:37,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:21:37,694 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2250 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:37,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 1500 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:21:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70289 states. [2023-12-21 13:21:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70289 to 34267. [2023-12-21 13:21:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34267 states, 34266 states have (on average 1.3483628086149535) internal successors, (46203), 34266 states have internal predecessors, (46203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34267 states to 34267 states and 46203 transitions. [2023-12-21 13:21:38,187 INFO L78 Accepts]: Start accepts. Automaton has 34267 states and 46203 transitions. Word has length 88 [2023-12-21 13:21:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 34267 states and 46203 transitions. [2023-12-21 13:21:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 34267 states and 46203 transitions. [2023-12-21 13:21:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:21:38,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:38,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:38,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:21:38,195 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:38,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1525050307, now seen corresponding path program 1 times [2023-12-21 13:21:38,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580565371] [2023-12-21 13:21:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580565371] [2023-12-21 13:21:38,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580565371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:38,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292994740] [2023-12-21 13:21:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:38,535 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) [2023-12-21 13:21:38,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:21:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:38,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:21:38,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:39,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:40,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292994740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:40,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2023-12-21 13:21:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747748987] [2023-12-21 13:21:40,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 13:21:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 13:21:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:21:40,139 INFO L87 Difference]: Start difference. First operand 34267 states and 46203 transitions. Second operand has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:43,226 INFO L93 Difference]: Finished difference Result 165464 states and 221029 transitions. [2023-12-21 13:21:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 13:21:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:21:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:43,379 INFO L225 Difference]: With dead ends: 165464 [2023-12-21 13:21:43,379 INFO L226 Difference]: Without dead ends: 150150 [2023-12-21 13:21:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=757, Invalid=2783, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 13:21:43,416 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 6828 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6828 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 3747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:43,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6828 Valid, 3832 Invalid, 3747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:21:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150150 states. [2023-12-21 13:21:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150150 to 34947. [2023-12-21 13:21:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34947 states, 34946 states have (on average 1.3481085102729926) internal successors, (47111), 34946 states have internal predecessors, (47111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34947 states to 34947 states and 47111 transitions. [2023-12-21 13:21:44,399 INFO L78 Accepts]: Start accepts. Automaton has 34947 states and 47111 transitions. Word has length 88 [2023-12-21 13:21:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:44,399 INFO L495 AbstractCegarLoop]: Abstraction has 34947 states and 47111 transitions. [2023-12-21 13:21:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34947 states and 47111 transitions. [2023-12-21 13:21:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:21:44,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:44,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:44,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:21:44,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:44,608 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:44,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1638706285, now seen corresponding path program 1 times [2023-12-21 13:21:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704435162] [2023-12-21 13:21:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:21:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704435162] [2023-12-21 13:21:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704435162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462810148] [2023-12-21 13:21:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:44,817 INFO L87 Difference]: Start difference. First operand 34947 states and 47111 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:45,768 INFO L93 Difference]: Finished difference Result 86847 states and 116919 transitions. [2023-12-21 13:21:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:21:45,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:21:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:45,840 INFO L225 Difference]: With dead ends: 86847 [2023-12-21 13:21:45,840 INFO L226 Difference]: Without dead ends: 71515 [2023-12-21 13:21:45,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:21:45,861 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1717 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:45,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1382 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:21:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71515 states. [2023-12-21 13:21:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71515 to 34935. [2023-12-21 13:21:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34935 states, 34934 states have (on average 1.3481994618423312) internal successors, (47098), 34934 states have internal predecessors, (47098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34935 states to 34935 states and 47098 transitions. [2023-12-21 13:21:46,465 INFO L78 Accepts]: Start accepts. Automaton has 34935 states and 47098 transitions. Word has length 88 [2023-12-21 13:21:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:46,465 INFO L495 AbstractCegarLoop]: Abstraction has 34935 states and 47098 transitions. [2023-12-21 13:21:46,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34935 states and 47098 transitions. [2023-12-21 13:21:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:21:46,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:46,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:21:46,476 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:46,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1887765159, now seen corresponding path program 1 times [2023-12-21 13:21:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320610386] [2023-12-21 13:21:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320610386] [2023-12-21 13:21:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320610386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:46,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:46,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673614536] [2023-12-21 13:21:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:46,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:46,562 INFO L87 Difference]: Start difference. First operand 34935 states and 47098 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:47,018 INFO L93 Difference]: Finished difference Result 68275 states and 92200 transitions. [2023-12-21 13:21:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:21:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:47,075 INFO L225 Difference]: With dead ends: 68275 [2023-12-21 13:21:47,076 INFO L226 Difference]: Without dead ends: 34721 [2023-12-21 13:21:47,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:47,097 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 172 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:47,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 872 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34721 states. [2023-12-21 13:21:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34721 to 34719. [2023-12-21 13:21:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34719 states, 34718 states have (on average 1.3323348119131286) internal successors, (46256), 34718 states have internal predecessors, (46256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34719 states to 34719 states and 46256 transitions. [2023-12-21 13:21:47,398 INFO L78 Accepts]: Start accepts. Automaton has 34719 states and 46256 transitions. Word has length 89 [2023-12-21 13:21:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:47,398 INFO L495 AbstractCegarLoop]: Abstraction has 34719 states and 46256 transitions. [2023-12-21 13:21:47,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 34719 states and 46256 transitions. [2023-12-21 13:21:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:21:47,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:47,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:21:47,403 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:47,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash 592654336, now seen corresponding path program 1 times [2023-12-21 13:21:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115155443] [2023-12-21 13:21:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:47,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:47,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115155443] [2023-12-21 13:21:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115155443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:47,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787288852] [2023-12-21 13:21:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:47,694 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) [2023-12-21 13:21:47,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:21:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:47,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 13:21:47,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:48,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787288852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:48,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-12-21 13:21:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654447471] [2023-12-21 13:21:48,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:48,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:21:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:21:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:48,237 INFO L87 Difference]: Start difference. First operand 34719 states and 46256 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:48,582 INFO L93 Difference]: Finished difference Result 104123 states and 137782 transitions. [2023-12-21 13:21:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:48,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:21:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:48,680 INFO L225 Difference]: With dead ends: 104123 [2023-12-21 13:21:48,680 INFO L226 Difference]: Without dead ends: 70785 [2023-12-21 13:21:48,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:21:48,719 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1435 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:48,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 1789 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70785 states. [2023-12-21 13:21:49,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70785 to 46331. [2023-12-21 13:21:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46331 states, 46330 states have (on average 1.3259227282538313) internal successors, (61430), 46330 states have internal predecessors, (61430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46331 states to 46331 states and 61430 transitions. [2023-12-21 13:21:49,496 INFO L78 Accepts]: Start accepts. Automaton has 46331 states and 61430 transitions. Word has length 89 [2023-12-21 13:21:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:49,497 INFO L495 AbstractCegarLoop]: Abstraction has 46331 states and 61430 transitions. [2023-12-21 13:21:49,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 46331 states and 61430 transitions. [2023-12-21 13:21:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 13:21:49,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:49,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:49,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:21:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-21 13:21:49,704 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:49,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -917036055, now seen corresponding path program 1 times [2023-12-21 13:21:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700151671] [2023-12-21 13:21:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700151671] [2023-12-21 13:21:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700151671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607414277] [2023-12-21 13:21:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:49,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:49,786 INFO L87 Difference]: Start difference. First operand 46331 states and 61430 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:50,765 INFO L93 Difference]: Finished difference Result 160888 states and 213108 transitions. [2023-12-21 13:21:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:21:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 13:21:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:50,920 INFO L225 Difference]: With dead ends: 160888 [2023-12-21 13:21:50,920 INFO L226 Difference]: Without dead ends: 115569 [2023-12-21 13:21:50,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:50,935 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1149 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:50,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 876 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115569 states. [2023-12-21 13:21:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115569 to 60918. [2023-12-21 13:21:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60918 states, 60917 states have (on average 1.2920695372391944) internal successors, (78709), 60917 states have internal predecessors, (78709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60918 states to 60918 states and 78709 transitions. [2023-12-21 13:21:51,827 INFO L78 Accepts]: Start accepts. Automaton has 60918 states and 78709 transitions. Word has length 91 [2023-12-21 13:21:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:51,827 INFO L495 AbstractCegarLoop]: Abstraction has 60918 states and 78709 transitions. [2023-12-21 13:21:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 60918 states and 78709 transitions. [2023-12-21 13:21:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:21:51,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:51,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:51,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:21:51,833 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:51,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:51,833 INFO L85 PathProgramCache]: Analyzing trace with hash -639194734, now seen corresponding path program 1 times [2023-12-21 13:21:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810751121] [2023-12-21 13:21:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:51,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:52,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:52,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810751121] [2023-12-21 13:21:52,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810751121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:52,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:52,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:52,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584804211] [2023-12-21 13:21:52,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:52,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:52,102 INFO L87 Difference]: Start difference. First operand 60918 states and 78709 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:52,696 INFO L93 Difference]: Finished difference Result 139564 states and 179921 transitions. [2023-12-21 13:21:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:21:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:21:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:52,785 INFO L225 Difference]: With dead ends: 139564 [2023-12-21 13:21:52,786 INFO L226 Difference]: Without dead ends: 79369 [2023-12-21 13:21:52,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:52,828 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1152 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:52,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 680 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:21:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79369 states. [2023-12-21 13:21:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79369 to 58381. [2023-12-21 13:21:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58381 states, 58380 states have (on average 1.2604830421377184) internal successors, (73587), 58380 states have internal predecessors, (73587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58381 states to 58381 states and 73587 transitions. [2023-12-21 13:21:53,913 INFO L78 Accepts]: Start accepts. Automaton has 58381 states and 73587 transitions. Word has length 92 [2023-12-21 13:21:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:53,913 INFO L495 AbstractCegarLoop]: Abstraction has 58381 states and 73587 transitions. [2023-12-21 13:21:53,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 58381 states and 73587 transitions. [2023-12-21 13:21:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:21:53,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:53,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:53,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:21:53,918 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:53,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -42999330, now seen corresponding path program 1 times [2023-12-21 13:21:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114267823] [2023-12-21 13:21:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114267823] [2023-12-21 13:21:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114267823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:53,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116181093] [2023-12-21 13:21:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:53,971 INFO L87 Difference]: Start difference. First operand 58381 states and 73587 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:54,150 INFO L93 Difference]: Finished difference Result 73019 states and 91802 transitions. [2023-12-21 13:21:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:54,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:21:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:54,196 INFO L225 Difference]: With dead ends: 73019 [2023-12-21 13:21:54,196 INFO L226 Difference]: Without dead ends: 43440 [2023-12-21 13:21:54,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:54,217 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 161 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 838 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43440 states. [2023-12-21 13:21:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43440 to 43265. [2023-12-21 13:21:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43265 states, 43264 states have (on average 1.2478272928994083) internal successors, (53986), 43264 states have internal predecessors, (53986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43265 states to 43265 states and 53986 transitions. [2023-12-21 13:21:54,743 INFO L78 Accepts]: Start accepts. Automaton has 43265 states and 53986 transitions. Word has length 92 [2023-12-21 13:21:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:54,743 INFO L495 AbstractCegarLoop]: Abstraction has 43265 states and 53986 transitions. [2023-12-21 13:21:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 43265 states and 53986 transitions. [2023-12-21 13:21:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:21:54,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:54,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:54,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:21:54,748 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:54,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 658093618, now seen corresponding path program 1 times [2023-12-21 13:21:54,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:54,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141760041] [2023-12-21 13:21:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141760041] [2023-12-21 13:21:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141760041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:54,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:54,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:54,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124363297] [2023-12-21 13:21:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:54,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:54,798 INFO L87 Difference]: Start difference. First operand 43265 states and 53986 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:54,932 INFO L93 Difference]: Finished difference Result 55054 states and 68473 transitions. [2023-12-21 13:21:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:21:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:54,962 INFO L225 Difference]: With dead ends: 55054 [2023-12-21 13:21:54,962 INFO L226 Difference]: Without dead ends: 30551 [2023-12-21 13:21:54,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:54,980 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 168 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:54,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 837 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30551 states. [2023-12-21 13:21:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30551 to 30519. [2023-12-21 13:21:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30519 states, 30518 states have (on average 1.2307162985778886) internal successors, (37559), 30518 states have internal predecessors, (37559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30519 states to 30519 states and 37559 transitions. [2023-12-21 13:21:55,457 INFO L78 Accepts]: Start accepts. Automaton has 30519 states and 37559 transitions. Word has length 93 [2023-12-21 13:21:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:55,457 INFO L495 AbstractCegarLoop]: Abstraction has 30519 states and 37559 transitions. [2023-12-21 13:21:55,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 30519 states and 37559 transitions. [2023-12-21 13:21:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:21:55,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:55,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:21:55,461 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:55,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash 428331928, now seen corresponding path program 1 times [2023-12-21 13:21:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:55,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124165755] [2023-12-21 13:21:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:55,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:21:55,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:55,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124165755] [2023-12-21 13:21:55,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124165755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:55,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559420386] [2023-12-21 13:21:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:55,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:55,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:55,513 INFO L87 Difference]: Start difference. First operand 30519 states and 37559 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:55,609 INFO L93 Difference]: Finished difference Result 39190 states and 48200 transitions. [2023-12-21 13:21:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:21:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:55,627 INFO L225 Difference]: With dead ends: 39190 [2023-12-21 13:21:55,627 INFO L226 Difference]: Without dead ends: 20516 [2023-12-21 13:21:55,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:55,639 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 140 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:55,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 849 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20516 states. [2023-12-21 13:21:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20516 to 20449. [2023-12-21 13:21:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20449 states, 20448 states have (on average 1.2127836463223787) internal successors, (24799), 20448 states have internal predecessors, (24799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20449 states to 20449 states and 24799 transitions. [2023-12-21 13:21:56,002 INFO L78 Accepts]: Start accepts. Automaton has 20449 states and 24799 transitions. Word has length 95 [2023-12-21 13:21:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:56,002 INFO L495 AbstractCegarLoop]: Abstraction has 20449 states and 24799 transitions. [2023-12-21 13:21:56,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20449 states and 24799 transitions. [2023-12-21 13:21:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:21:56,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:56,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:56,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:21:56,007 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:56,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1529822711, now seen corresponding path program 1 times [2023-12-21 13:21:56,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:56,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440338927] [2023-12-21 13:21:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:56,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440338927] [2023-12-21 13:21:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440338927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69830498] [2023-12-21 13:21:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:56,085 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) [2023-12-21 13:21:56,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:21:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:56,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:21:56,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:56,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69830498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:56,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:21:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535370608] [2023-12-21 13:21:56,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:21:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:21:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:21:56,726 INFO L87 Difference]: Start difference. First operand 20449 states and 24799 transitions. Second operand has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:57,350 INFO L93 Difference]: Finished difference Result 42508 states and 51368 transitions. [2023-12-21 13:21:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:21:57,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:21:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:57,370 INFO L225 Difference]: With dead ends: 42508 [2023-12-21 13:21:57,371 INFO L226 Difference]: Without dead ends: 22641 [2023-12-21 13:21:57,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:21:57,384 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 3374 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:57,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 1227 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22641 states. [2023-12-21 13:21:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22641 to 20003. [2023-12-21 13:21:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.1812318768123187) internal successors, (23627), 20002 states have internal predecessors, (23627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 23627 transitions. [2023-12-21 13:21:57,665 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 23627 transitions. Word has length 95 [2023-12-21 13:21:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:57,665 INFO L495 AbstractCegarLoop]: Abstraction has 20003 states and 23627 transitions. [2023-12-21 13:21:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 23627 transitions. [2023-12-21 13:21:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:21:57,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:57,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:57,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:21:57,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 13:21:57,869 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:57,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:57,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1745515542, now seen corresponding path program 1 times [2023-12-21 13:21:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:57,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562240118] [2023-12-21 13:21:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:21:57,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:57,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562240118] [2023-12-21 13:21:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562240118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:57,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:57,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534686588] [2023-12-21 13:21:57,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:21:57,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:21:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:21:57,932 INFO L87 Difference]: Start difference. First operand 20003 states and 23627 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:58,337 INFO L93 Difference]: Finished difference Result 41139 states and 49197 transitions. [2023-12-21 13:21:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:21:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:58,373 INFO L225 Difference]: With dead ends: 41139 [2023-12-21 13:21:58,373 INFO L226 Difference]: Without dead ends: 34892 [2023-12-21 13:21:58,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:58,386 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 488 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:58,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 972 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:21:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34892 states. [2023-12-21 13:21:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34892 to 22909. [2023-12-21 13:21:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22909 states, 22908 states have (on average 1.1828618823118562) internal successors, (27097), 22908 states have internal predecessors, (27097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22909 states to 22909 states and 27097 transitions. [2023-12-21 13:21:58,730 INFO L78 Accepts]: Start accepts. Automaton has 22909 states and 27097 transitions. Word has length 95 [2023-12-21 13:21:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:58,731 INFO L495 AbstractCegarLoop]: Abstraction has 22909 states and 27097 transitions. [2023-12-21 13:21:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 22909 states and 27097 transitions. [2023-12-21 13:21:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:21:58,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:58,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:58,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 13:21:58,735 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:58,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1349066365, now seen corresponding path program 1 times [2023-12-21 13:21:58,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:58,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826733747] [2023-12-21 13:21:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:58,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826733747] [2023-12-21 13:21:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826733747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676948008] [2023-12-21 13:21:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:58,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:58,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:58,792 INFO L87 Difference]: Start difference. First operand 22909 states and 27097 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:58,912 INFO L93 Difference]: Finished difference Result 42634 states and 50657 transitions. [2023-12-21 13:21:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 13:21:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:58,945 INFO L225 Difference]: With dead ends: 42634 [2023-12-21 13:21:58,946 INFO L226 Difference]: Without dead ends: 34665 [2023-12-21 13:21:58,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:58,958 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 174 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:58,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 909 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34665 states. [2023-12-21 13:21:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34665 to 23622. [2023-12-21 13:21:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23622 states, 23621 states have (on average 1.1761144744083654) internal successors, (27781), 23621 states have internal predecessors, (27781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23622 states to 23622 states and 27781 transitions. [2023-12-21 13:21:59,339 INFO L78 Accepts]: Start accepts. Automaton has 23622 states and 27781 transitions. Word has length 96 [2023-12-21 13:21:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:59,339 INFO L495 AbstractCegarLoop]: Abstraction has 23622 states and 27781 transitions. [2023-12-21 13:21:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 23622 states and 27781 transitions. [2023-12-21 13:21:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 13:21:59,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:59,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:59,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 13:21:59,344 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:21:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash -879867485, now seen corresponding path program 1 times [2023-12-21 13:21:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485795504] [2023-12-21 13:21:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:59,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485795504] [2023-12-21 13:21:59,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485795504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:59,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:59,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:21:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593095268] [2023-12-21 13:21:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:21:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:21:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:59,565 INFO L87 Difference]: Start difference. First operand 23622 states and 27781 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:00,657 INFO L93 Difference]: Finished difference Result 56790 states and 66663 transitions. [2023-12-21 13:22:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:22:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 13:22:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:00,700 INFO L225 Difference]: With dead ends: 56790 [2023-12-21 13:22:00,700 INFO L226 Difference]: Without dead ends: 45911 [2023-12-21 13:22:00,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:22:00,717 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 2150 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:00,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 1689 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:22:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45911 states. [2023-12-21 13:22:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45911 to 36950. [2023-12-21 13:22:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36950 states, 36949 states have (on average 1.1733199815962543) internal successors, (43353), 36949 states have internal predecessors, (43353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36950 states to 36950 states and 43353 transitions. [2023-12-21 13:22:01,238 INFO L78 Accepts]: Start accepts. Automaton has 36950 states and 43353 transitions. Word has length 97 [2023-12-21 13:22:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:01,239 INFO L495 AbstractCegarLoop]: Abstraction has 36950 states and 43353 transitions. [2023-12-21 13:22:01,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 36950 states and 43353 transitions. [2023-12-21 13:22:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:22:01,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:01,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:01,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 13:22:01,245 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:01,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:01,245 INFO L85 PathProgramCache]: Analyzing trace with hash -523666449, now seen corresponding path program 1 times [2023-12-21 13:22:01,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:01,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190625828] [2023-12-21 13:22:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:22:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190625828] [2023-12-21 13:22:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190625828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:22:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015500350] [2023-12-21 13:22:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:22:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:22:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:22:01,581 INFO L87 Difference]: Start difference. First operand 36950 states and 43353 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:02,346 INFO L93 Difference]: Finished difference Result 66361 states and 78049 transitions. [2023-12-21 13:22:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:22:02,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:22:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:02,404 INFO L225 Difference]: With dead ends: 66361 [2023-12-21 13:22:02,404 INFO L226 Difference]: Without dead ends: 56543 [2023-12-21 13:22:02,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:22:02,423 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1896 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:02,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 1163 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56543 states. [2023-12-21 13:22:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56543 to 36950. [2023-12-21 13:22:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36950 states, 36949 states have (on average 1.1732658529324205) internal successors, (43351), 36949 states have internal predecessors, (43351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36950 states to 36950 states and 43351 transitions. [2023-12-21 13:22:02,910 INFO L78 Accepts]: Start accepts. Automaton has 36950 states and 43351 transitions. Word has length 98 [2023-12-21 13:22:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:02,911 INFO L495 AbstractCegarLoop]: Abstraction has 36950 states and 43351 transitions. [2023-12-21 13:22:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 36950 states and 43351 transitions. [2023-12-21 13:22:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:22:02,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:02,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:02,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 13:22:02,915 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:02,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:02,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1461607553, now seen corresponding path program 1 times [2023-12-21 13:22:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355742708] [2023-12-21 13:22:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:02,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:22:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355742708] [2023-12-21 13:22:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355742708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:22:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30257932] [2023-12-21 13:22:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:22:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:22:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:22:03,104 INFO L87 Difference]: Start difference. First operand 36950 states and 43351 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:04,031 INFO L93 Difference]: Finished difference Result 58677 states and 68903 transitions. [2023-12-21 13:22:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:22:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 13:22:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:04,086 INFO L225 Difference]: With dead ends: 58677 [2023-12-21 13:22:04,086 INFO L226 Difference]: Without dead ends: 55283 [2023-12-21 13:22:04,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:22:04,095 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1216 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:04,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1573 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55283 states. [2023-12-21 13:22:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55283 to 36950. [2023-12-21 13:22:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36950 states, 36949 states have (on average 1.1732387886005033) internal successors, (43350), 36949 states have internal predecessors, (43350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36950 states to 36950 states and 43350 transitions. [2023-12-21 13:22:04,478 INFO L78 Accepts]: Start accepts. Automaton has 36950 states and 43350 transitions. Word has length 99 [2023-12-21 13:22:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:04,478 INFO L495 AbstractCegarLoop]: Abstraction has 36950 states and 43350 transitions. [2023-12-21 13:22:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 36950 states and 43350 transitions. [2023-12-21 13:22:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:22:04,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:04,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:04,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:22:04,483 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:04,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1115758178, now seen corresponding path program 1 times [2023-12-21 13:22:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333711182] [2023-12-21 13:22:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333711182] [2023-12-21 13:22:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333711182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881749677] [2023-12-21 13:22:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:04,985 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) [2023-12-21 13:22:05,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:22:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:05,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 13:22:05,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:06,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881749677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:06,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:06,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2023-12-21 13:22:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49354045] [2023-12-21 13:22:06,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 13:22:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 13:22:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:22:06,524 INFO L87 Difference]: Start difference. First operand 36950 states and 43350 transitions. Second operand has 26 states, 26 states have (on average 10.884615384615385) internal successors, (283), 26 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:17,939 INFO L93 Difference]: Finished difference Result 119590 states and 139430 transitions. [2023-12-21 13:22:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-12-21 13:22:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.884615384615385) internal successors, (283), 26 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 13:22:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:18,063 INFO L225 Difference]: With dead ends: 119590 [2023-12-21 13:22:18,063 INFO L226 Difference]: Without dead ends: 117926 [2023-12-21 13:22:18,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10158 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3629, Invalid=24427, Unknown=0, NotChecked=0, Total=28056 [2023-12-21 13:22:18,083 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 6461 mSDsluCounter, 11443 mSDsCounter, 0 mSdLazyCounter, 9860 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6461 SdHoareTripleChecker+Valid, 12174 SdHoareTripleChecker+Invalid, 9974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 9860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:18,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6461 Valid, 12174 Invalid, 9974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 9860 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-21 13:22:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117926 states. [2023-12-21 13:22:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117926 to 38585. [2023-12-21 13:22:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38585 states, 38584 states have (on average 1.1738026124818577) internal successors, (45290), 38584 states have internal predecessors, (45290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38585 states to 38585 states and 45290 transitions. [2023-12-21 13:22:18,677 INFO L78 Accepts]: Start accepts. Automaton has 38585 states and 45290 transitions. Word has length 99 [2023-12-21 13:22:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:18,677 INFO L495 AbstractCegarLoop]: Abstraction has 38585 states and 45290 transitions. [2023-12-21 13:22:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.884615384615385) internal successors, (283), 26 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 38585 states and 45290 transitions. [2023-12-21 13:22:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:22:18,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:18,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:18,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 13:22:18,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:18,882 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:18,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -445255623, now seen corresponding path program 1 times [2023-12-21 13:22:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335998632] [2023-12-21 13:22:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335998632] [2023-12-21 13:22:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335998632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381259349] [2023-12-21 13:22:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:19,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:19,117 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) [2023-12-21 13:22:19,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:22:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:19,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:22:19,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:19,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381259349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:20,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2023-12-21 13:22:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184187528] [2023-12-21 13:22:20,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 13:22:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 13:22:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:22:20,348 INFO L87 Difference]: Start difference. First operand 38585 states and 45290 transitions. Second operand has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 27 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:26,193 INFO L93 Difference]: Finished difference Result 134103 states and 156314 transitions. [2023-12-21 13:22:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 13:22:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 27 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 13:22:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:26,314 INFO L225 Difference]: With dead ends: 134103 [2023-12-21 13:22:26,314 INFO L226 Difference]: Without dead ends: 114137 [2023-12-21 13:22:26,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3319 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2198, Invalid=8722, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 13:22:26,350 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 5671 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 5885 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5671 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 5885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:26,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5671 Valid, 6540 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 5885 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 13:22:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114137 states. [2023-12-21 13:22:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114137 to 56457. [2023-12-21 13:22:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56457 states, 56456 states have (on average 1.174684710216806) internal successors, (66318), 56456 states have internal predecessors, (66318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56457 states to 56457 states and 66318 transitions. [2023-12-21 13:22:27,088 INFO L78 Accepts]: Start accepts. Automaton has 56457 states and 66318 transitions. Word has length 99 [2023-12-21 13:22:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:27,089 INFO L495 AbstractCegarLoop]: Abstraction has 56457 states and 66318 transitions. [2023-12-21 13:22:27,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 27 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 56457 states and 66318 transitions. [2023-12-21 13:22:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:22:27,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:27,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:27,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-21 13:22:27,295 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1144054494, now seen corresponding path program 1 times [2023-12-21 13:22:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55917566] [2023-12-21 13:22:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:22:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55917566] [2023-12-21 13:22:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55917566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:27,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:27,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:22:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920878208] [2023-12-21 13:22:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:22:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:22:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:22:27,353 INFO L87 Difference]: Start difference. First operand 56457 states and 66318 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:27,854 INFO L93 Difference]: Finished difference Result 108019 states and 126800 transitions. [2023-12-21 13:22:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:22:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:22:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:27,943 INFO L225 Difference]: With dead ends: 108019 [2023-12-21 13:22:27,944 INFO L226 Difference]: Without dead ends: 92015 [2023-12-21 13:22:27,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:22:27,972 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 429 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:27,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 949 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:22:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92015 states. [2023-12-21 13:22:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92015 to 64333. [2023-12-21 13:22:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64333 states, 64332 states have (on average 1.1751228004725487) internal successors, (75598), 64332 states have internal predecessors, (75598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64333 states to 64333 states and 75598 transitions. [2023-12-21 13:22:29,370 INFO L78 Accepts]: Start accepts. Automaton has 64333 states and 75598 transitions. Word has length 100 [2023-12-21 13:22:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:29,371 INFO L495 AbstractCegarLoop]: Abstraction has 64333 states and 75598 transitions. [2023-12-21 13:22:29,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 64333 states and 75598 transitions. [2023-12-21 13:22:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:22:29,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:29,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:29,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 13:22:29,377 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:29,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash -754475811, now seen corresponding path program 1 times [2023-12-21 13:22:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724184819] [2023-12-21 13:22:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:22:29,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724184819] [2023-12-21 13:22:29,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724184819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:29,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:29,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:22:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532050939] [2023-12-21 13:22:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:22:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:22:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:22:29,540 INFO L87 Difference]: Start difference. First operand 64333 states and 75598 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:30,190 INFO L93 Difference]: Finished difference Result 77641 states and 91133 transitions. [2023-12-21 13:22:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:22:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:22:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:30,458 INFO L225 Difference]: With dead ends: 77641 [2023-12-21 13:22:30,458 INFO L226 Difference]: Without dead ends: 67522 [2023-12-21 13:22:30,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:22:30,466 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1083 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:30,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1155 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67522 states. [2023-12-21 13:22:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67522 to 64333. [2023-12-21 13:22:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64333 states, 64332 states have (on average 1.1751072561089349) internal successors, (75597), 64332 states have internal predecessors, (75597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64333 states to 64333 states and 75597 transitions. [2023-12-21 13:22:31,167 INFO L78 Accepts]: Start accepts. Automaton has 64333 states and 75597 transitions. Word has length 100 [2023-12-21 13:22:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:31,167 INFO L495 AbstractCegarLoop]: Abstraction has 64333 states and 75597 transitions. [2023-12-21 13:22:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 64333 states and 75597 transitions. [2023-12-21 13:22:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:22:31,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:31,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:31,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 13:22:31,174 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1115541813, now seen corresponding path program 1 times [2023-12-21 13:22:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333933052] [2023-12-21 13:22:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:22:31,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:31,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333933052] [2023-12-21 13:22:31,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333933052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:31,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:31,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:22:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363156593] [2023-12-21 13:22:31,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:22:31,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:31,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:22:31,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:22:31,222 INFO L87 Difference]: Start difference. First operand 64333 states and 75597 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:31,647 INFO L93 Difference]: Finished difference Result 92690 states and 108867 transitions. [2023-12-21 13:22:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:22:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:22:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:31,732 INFO L225 Difference]: With dead ends: 92690 [2023-12-21 13:22:31,732 INFO L226 Difference]: Without dead ends: 86700 [2023-12-21 13:22:31,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:22:31,757 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 442 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:31,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 934 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:22:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86700 states. [2023-12-21 13:22:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86700 to 64333. [2023-12-21 13:22:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64333 states, 64332 states have (on average 1.1751072561089349) internal successors, (75597), 64332 states have internal predecessors, (75597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64333 states to 64333 states and 75597 transitions. [2023-12-21 13:22:32,795 INFO L78 Accepts]: Start accepts. Automaton has 64333 states and 75597 transitions. Word has length 100 [2023-12-21 13:22:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:32,795 INFO L495 AbstractCegarLoop]: Abstraction has 64333 states and 75597 transitions. [2023-12-21 13:22:32,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 64333 states and 75597 transitions. [2023-12-21 13:22:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:22:32,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:32,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:32,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 13:22:32,803 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:32,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash 715550614, now seen corresponding path program 1 times [2023-12-21 13:22:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795979426] [2023-12-21 13:22:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:32,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795979426] [2023-12-21 13:22:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795979426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:32,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:32,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524242096] [2023-12-21 13:22:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:32,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:32,887 INFO L87 Difference]: Start difference. First operand 64333 states and 75597 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:33,218 INFO L93 Difference]: Finished difference Result 119074 states and 141178 transitions. [2023-12-21 13:22:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:33,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:22:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:33,296 INFO L225 Difference]: With dead ends: 119074 [2023-12-21 13:22:33,296 INFO L226 Difference]: Without dead ends: 55875 [2023-12-21 13:22:33,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:33,341 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 159 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:33,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 780 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:22:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55875 states. [2023-12-21 13:22:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55875 to 52783. [2023-12-21 13:22:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52783 states, 52782 states have (on average 1.1735819029214505) internal successors, (61944), 52782 states have internal predecessors, (61944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52783 states to 52783 states and 61944 transitions. [2023-12-21 13:22:34,024 INFO L78 Accepts]: Start accepts. Automaton has 52783 states and 61944 transitions. Word has length 100 [2023-12-21 13:22:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:34,024 INFO L495 AbstractCegarLoop]: Abstraction has 52783 states and 61944 transitions. [2023-12-21 13:22:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 52783 states and 61944 transitions. [2023-12-21 13:22:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:22:34,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:34,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:34,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 13:22:34,028 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:34,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 229754269, now seen corresponding path program 1 times [2023-12-21 13:22:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812130080] [2023-12-21 13:22:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812130080] [2023-12-21 13:22:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812130080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075534400] [2023-12-21 13:22:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:34,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:34,637 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) [2023-12-21 13:22:34,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:22:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:34,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:22:34,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:35,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075534400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:35,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 28 [2023-12-21 13:22:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177939742] [2023-12-21 13:22:35,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:35,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 13:22:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 13:22:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:22:35,933 INFO L87 Difference]: Start difference. First operand 52783 states and 61944 transitions. Second operand has 28 states, 28 states have (on average 8.178571428571429) internal successors, (229), 28 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:37,405 INFO L93 Difference]: Finished difference Result 73892 states and 86412 transitions. [2023-12-21 13:22:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 13:22:37,405 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.178571428571429) internal successors, (229), 28 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:22:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:37,465 INFO L225 Difference]: With dead ends: 73892 [2023-12-21 13:22:37,465 INFO L226 Difference]: Without dead ends: 64646 [2023-12-21 13:22:37,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=507, Invalid=2043, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 13:22:37,472 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 2917 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 7606 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:37,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2917 Valid, 7606 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:22:37,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64646 states. [2023-12-21 13:22:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64646 to 57377. [2023-12-21 13:22:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57377 states, 57376 states have (on average 1.1718837144450642) internal successors, (67238), 57376 states have internal predecessors, (67238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57377 states to 57377 states and 67238 transitions. [2023-12-21 13:22:38,069 INFO L78 Accepts]: Start accepts. Automaton has 57377 states and 67238 transitions. Word has length 100 [2023-12-21 13:22:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:38,070 INFO L495 AbstractCegarLoop]: Abstraction has 57377 states and 67238 transitions. [2023-12-21 13:22:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.178571428571429) internal successors, (229), 28 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 57377 states and 67238 transitions. [2023-12-21 13:22:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:22:38,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:38,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:38,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:38,275 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:38,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1940422581, now seen corresponding path program 1 times [2023-12-21 13:22:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118311861] [2023-12-21 13:22:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:22:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118311861] [2023-12-21 13:22:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118311861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:38,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:22:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427505689] [2023-12-21 13:22:38,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:38,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:22:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:22:38,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:22:38,452 INFO L87 Difference]: Start difference. First operand 57377 states and 67238 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:39,246 INFO L93 Difference]: Finished difference Result 91759 states and 107645 transitions. [2023-12-21 13:22:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:22:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:22:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:39,537 INFO L225 Difference]: With dead ends: 91759 [2023-12-21 13:22:39,537 INFO L226 Difference]: Without dead ends: 84081 [2023-12-21 13:22:39,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:22:39,545 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1071 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:39,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1672 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84081 states. [2023-12-21 13:22:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84081 to 57377. [2023-12-21 13:22:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57377 states, 57376 states have (on average 1.1718488566648075) internal successors, (67236), 57376 states have internal predecessors, (67236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57377 states to 57377 states and 67236 transitions. [2023-12-21 13:22:40,235 INFO L78 Accepts]: Start accepts. Automaton has 57377 states and 67236 transitions. Word has length 101 [2023-12-21 13:22:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:40,235 INFO L495 AbstractCegarLoop]: Abstraction has 57377 states and 67236 transitions. [2023-12-21 13:22:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 57377 states and 67236 transitions. [2023-12-21 13:22:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:22:40,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:40,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 13:22:40,239 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:40,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1530272987, now seen corresponding path program 1 times [2023-12-21 13:22:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:40,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470298403] [2023-12-21 13:22:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:22:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470298403] [2023-12-21 13:22:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470298403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744903796] [2023-12-21 13:22:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:40,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:40,318 INFO L87 Difference]: Start difference. First operand 57377 states and 67236 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:40,546 INFO L93 Difference]: Finished difference Result 84055 states and 98609 transitions. [2023-12-21 13:22:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:22:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:40,589 INFO L225 Difference]: With dead ends: 84055 [2023-12-21 13:22:40,589 INFO L226 Difference]: Without dead ends: 29683 [2023-12-21 13:22:40,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:40,621 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 242 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:40,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 637 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:22:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2023-12-21 13:22:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 29681. [2023-12-21 13:22:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29681 states, 29680 states have (on average 1.148921832884097) internal successors, (34100), 29680 states have internal predecessors, (34100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29681 states to 29681 states and 34100 transitions. [2023-12-21 13:22:41,081 INFO L78 Accepts]: Start accepts. Automaton has 29681 states and 34100 transitions. Word has length 101 [2023-12-21 13:22:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:41,081 INFO L495 AbstractCegarLoop]: Abstraction has 29681 states and 34100 transitions. [2023-12-21 13:22:41,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29681 states and 34100 transitions. [2023-12-21 13:22:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:22:41,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:41,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:41,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 13:22:41,084 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:41,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2022742799, now seen corresponding path program 1 times [2023-12-21 13:22:41,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:41,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816597917] [2023-12-21 13:22:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:41,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:41,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:41,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816597917] [2023-12-21 13:22:41,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816597917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:41,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687175674] [2023-12-21 13:22:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:41,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:41,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:41,284 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) [2023-12-21 13:22:41,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:22:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:41,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:22:41,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:41,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:22:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687175674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:41,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:22:41,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2023-12-21 13:22:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560457362] [2023-12-21 13:22:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:41,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:22:41,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:22:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:22:41,973 INFO L87 Difference]: Start difference. First operand 29681 states and 34100 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:42,515 INFO L93 Difference]: Finished difference Result 36737 states and 42225 transitions. [2023-12-21 13:22:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:22:42,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:22:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:42,546 INFO L225 Difference]: With dead ends: 36737 [2023-12-21 13:22:42,546 INFO L226 Difference]: Without dead ends: 32576 [2023-12-21 13:22:42,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:22:42,555 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 828 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:42,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 4065 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:22:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32576 states. [2023-12-21 13:22:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32576 to 31806. [2023-12-21 13:22:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31806 states, 31805 states have (on average 1.149064612482314) internal successors, (36546), 31805 states have internal predecessors, (36546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31806 states to 31806 states and 36546 transitions. [2023-12-21 13:22:42,973 INFO L78 Accepts]: Start accepts. Automaton has 31806 states and 36546 transitions. Word has length 101 [2023-12-21 13:22:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:42,974 INFO L495 AbstractCegarLoop]: Abstraction has 31806 states and 36546 transitions. [2023-12-21 13:22:42,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31806 states and 36546 transitions. [2023-12-21 13:22:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:22:42,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:42,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:42,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:43,178 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2038727416, now seen corresponding path program 1 times [2023-12-21 13:22:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494824044] [2023-12-21 13:22:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:43,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:43,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494824044] [2023-12-21 13:22:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494824044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:43,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836040595] [2023-12-21 13:22:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:43,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:43,578 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) [2023-12-21 13:22:43,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:22:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:43,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:22:43,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:44,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:44,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836040595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:44,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:44,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 29 [2023-12-21 13:22:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632744068] [2023-12-21 13:22:44,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:22:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:22:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:22:44,692 INFO L87 Difference]: Start difference. First operand 31806 states and 36546 transitions. Second operand has 29 states, 29 states have (on average 8.482758620689655) internal successors, (246), 29 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:46,306 INFO L93 Difference]: Finished difference Result 41213 states and 47120 transitions. [2023-12-21 13:22:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 13:22:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.482758620689655) internal successors, (246), 29 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:22:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:46,340 INFO L225 Difference]: With dead ends: 41213 [2023-12-21 13:22:46,340 INFO L226 Difference]: Without dead ends: 36712 [2023-12-21 13:22:46,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:22:46,353 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 2313 mSDsluCounter, 10460 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 11089 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:46,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 11089 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:22:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36712 states. [2023-12-21 13:22:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36712 to 31821. [2023-12-21 13:22:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31821 states, 31820 states have (on average 1.1481458202388435) internal successors, (36534), 31820 states have internal predecessors, (36534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31821 states to 31821 states and 36534 transitions. [2023-12-21 13:22:46,669 INFO L78 Accepts]: Start accepts. Automaton has 31821 states and 36534 transitions. Word has length 101 [2023-12-21 13:22:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:46,669 INFO L495 AbstractCegarLoop]: Abstraction has 31821 states and 36534 transitions. [2023-12-21 13:22:46,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.482758620689655) internal successors, (246), 29 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 31821 states and 36534 transitions. [2023-12-21 13:22:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:22:46,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:46,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:46,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-12-21 13:22:46,873 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:22:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1711561113, now seen corresponding path program 1 times [2023-12-21 13:22:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752049393] [2023-12-21 13:22:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752049393] [2023-12-21 13:22:47,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752049393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820012697] [2023-12-21 13:22:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:47,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:22:47,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:22:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:47,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:22:47,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:48,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820012697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:48,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 30 [2023-12-21 13:22:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035281107] [2023-12-21 13:22:48,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:22:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:22:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:22:48,499 INFO L87 Difference]: Start difference. First operand 31821 states and 36534 transitions. Second operand has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 30 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:01,936 INFO L93 Difference]: Finished difference Result 90725 states and 102996 transitions. [2023-12-21 13:23:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-12-21 13:23:01,936 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 30 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:02,017 INFO L225 Difference]: With dead ends: 90725 [2023-12-21 13:23:02,018 INFO L226 Difference]: Without dead ends: 89251 [2023-12-21 13:23:02,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12788 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=5544, Invalid=29612, Unknown=0, NotChecked=0, Total=35156 [2023-12-21 13:23:02,043 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 10225 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 6284 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10225 SdHoareTripleChecker+Valid, 6238 SdHoareTripleChecker+Invalid, 6595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 6284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:02,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10225 Valid, 6238 Invalid, 6595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 6284 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 13:23:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89251 states. [2023-12-21 13:23:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89251 to 31786. [2023-12-21 13:23:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31786 states, 31785 states have (on average 1.1477426459021551) internal successors, (36481), 31785 states have internal predecessors, (36481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31786 states to 31786 states and 36481 transitions. [2023-12-21 13:23:02,622 INFO L78 Accepts]: Start accepts. Automaton has 31786 states and 36481 transitions. Word has length 102 [2023-12-21 13:23:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 31786 states and 36481 transitions. [2023-12-21 13:23:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 30 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 31786 states and 36481 transitions. [2023-12-21 13:23:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:02,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:02,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-21 13:23:02,826 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:02,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1585687534, now seen corresponding path program 1 times [2023-12-21 13:23:02,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:02,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756808562] [2023-12-21 13:23:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:02,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756808562] [2023-12-21 13:23:02,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756808562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:02,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990028822] [2023-12-21 13:23:02,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:02,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:02,862 INFO L87 Difference]: Start difference. First operand 31786 states and 36481 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:02,969 INFO L93 Difference]: Finished difference Result 38837 states and 44638 transitions. [2023-12-21 13:23:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:02,998 INFO L225 Difference]: With dead ends: 38837 [2023-12-21 13:23:02,998 INFO L226 Difference]: Without dead ends: 32349 [2023-12-21 13:23:03,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:03,009 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 97 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 932 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32349 states. [2023-12-21 13:23:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32349 to 32306. [2023-12-21 13:23:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32306 states, 32305 states have (on average 1.1453644946602692) internal successors, (37001), 32305 states have internal predecessors, (37001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32306 states to 32306 states and 37001 transitions. [2023-12-21 13:23:03,269 INFO L78 Accepts]: Start accepts. Automaton has 32306 states and 37001 transitions. Word has length 102 [2023-12-21 13:23:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:03,269 INFO L495 AbstractCegarLoop]: Abstraction has 32306 states and 37001 transitions. [2023-12-21 13:23:03,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 32306 states and 37001 transitions. [2023-12-21 13:23:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:03,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:03,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 13:23:03,273 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:03,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1344902827, now seen corresponding path program 1 times [2023-12-21 13:23:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058312161] [2023-12-21 13:23:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058312161] [2023-12-21 13:23:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058312161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526194755] [2023-12-21 13:23:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:03,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:03,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:03,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:23:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:04,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:23:04,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:04,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526194755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:04,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:04,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 25 [2023-12-21 13:23:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913668059] [2023-12-21 13:23:04,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 13:23:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 13:23:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:23:04,817 INFO L87 Difference]: Start difference. First operand 32306 states and 37001 transitions. Second operand has 25 states, 25 states have (on average 8.72) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:06,228 INFO L93 Difference]: Finished difference Result 50897 states and 58146 transitions. [2023-12-21 13:23:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 13:23:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:06,280 INFO L225 Difference]: With dead ends: 50897 [2023-12-21 13:23:06,280 INFO L226 Difference]: Without dead ends: 49261 [2023-12-21 13:23:06,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=372, Invalid=1698, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 13:23:06,295 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 3011 mSDsluCounter, 7738 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:06,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3011 Valid, 8361 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:23:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49261 states. [2023-12-21 13:23:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49261 to 32253. [2023-12-21 13:23:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32253 states, 32252 states have (on average 1.1451382859977677) internal successors, (36933), 32252 states have internal predecessors, (36933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32253 states to 32253 states and 36933 transitions. [2023-12-21 13:23:06,739 INFO L78 Accepts]: Start accepts. Automaton has 32253 states and 36933 transitions. Word has length 102 [2023-12-21 13:23:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:06,739 INFO L495 AbstractCegarLoop]: Abstraction has 32253 states and 36933 transitions. [2023-12-21 13:23:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 32253 states and 36933 transitions. [2023-12-21 13:23:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:06,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:06,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:06,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:06,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 13:23:06,943 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:06,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1774055125, now seen corresponding path program 1 times [2023-12-21 13:23:06,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:06,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527508147] [2023-12-21 13:23:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527508147] [2023-12-21 13:23:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527508147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037498833] [2023-12-21 13:23:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:07,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:07,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:23:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:07,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:23:07,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:07,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:23:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037498833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:07,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:23:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-12-21 13:23:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650543392] [2023-12-21 13:23:07,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:23:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:23:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:23:07,833 INFO L87 Difference]: Start difference. First operand 32253 states and 36933 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:08,348 INFO L93 Difference]: Finished difference Result 35691 states and 40853 transitions. [2023-12-21 13:23:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:23:08,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:08,375 INFO L225 Difference]: With dead ends: 35691 [2023-12-21 13:23:08,375 INFO L226 Difference]: Without dead ends: 31485 [2023-12-21 13:23:08,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:23:08,385 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 820 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:08,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 3706 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:23:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31485 states. [2023-12-21 13:23:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31485 to 31111. [2023-12-21 13:23:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31111 states, 31110 states have (on average 1.143394406943105) internal successors, (35571), 31110 states have internal predecessors, (35571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31111 states to 31111 states and 35571 transitions. [2023-12-21 13:23:08,756 INFO L78 Accepts]: Start accepts. Automaton has 31111 states and 35571 transitions. Word has length 102 [2023-12-21 13:23:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 31111 states and 35571 transitions. [2023-12-21 13:23:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 31111 states and 35571 transitions. [2023-12-21 13:23:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:08,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:08,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:08,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:08,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-21 13:23:08,960 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:08,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1703931800, now seen corresponding path program 1 times [2023-12-21 13:23:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726337675] [2023-12-21 13:23:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:09,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726337675] [2023-12-21 13:23:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726337675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399109539] [2023-12-21 13:23:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:09,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:09,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:09,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:09,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:23:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:09,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:23:09,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:09,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:10,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399109539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:10,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:10,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 23 [2023-12-21 13:23:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78395476] [2023-12-21 13:23:10,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:10,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 13:23:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 13:23:10,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:23:10,460 INFO L87 Difference]: Start difference. First operand 31111 states and 35571 transitions. Second operand has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:13,379 INFO L93 Difference]: Finished difference Result 74586 states and 84943 transitions. [2023-12-21 13:23:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 13:23:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:13,451 INFO L225 Difference]: With dead ends: 74586 [2023-12-21 13:23:13,452 INFO L226 Difference]: Without dead ends: 72375 [2023-12-21 13:23:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=616, Invalid=2690, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 13:23:13,471 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 4186 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4186 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:13,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4186 Valid, 4116 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:23:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72375 states. [2023-12-21 13:23:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72375 to 31040. [2023-12-21 13:23:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31040 states, 31039 states have (on average 1.1434002384097426) internal successors, (35490), 31039 states have internal predecessors, (35490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31040 states to 31040 states and 35490 transitions. [2023-12-21 13:23:13,983 INFO L78 Accepts]: Start accepts. Automaton has 31040 states and 35490 transitions. Word has length 102 [2023-12-21 13:23:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:13,984 INFO L495 AbstractCegarLoop]: Abstraction has 31040 states and 35490 transitions. [2023-12-21 13:23:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 31040 states and 35490 transitions. [2023-12-21 13:23:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:13,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:13,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:13,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:14,188 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1688891762, now seen corresponding path program 1 times [2023-12-21 13:23:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813553935] [2023-12-21 13:23:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813553935] [2023-12-21 13:23:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813553935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:14,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963203594] [2023-12-21 13:23:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:14,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:14,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:14,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:14,247 INFO L87 Difference]: Start difference. First operand 31040 states and 35490 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:14,376 INFO L93 Difference]: Finished difference Result 45338 states and 51997 transitions. [2023-12-21 13:23:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:14,397 INFO L225 Difference]: With dead ends: 45338 [2023-12-21 13:23:14,397 INFO L226 Difference]: Without dead ends: 16696 [2023-12-21 13:23:14,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:14,416 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 154 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:14,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 691 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16696 states. [2023-12-21 13:23:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16696 to 16573. [2023-12-21 13:23:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16573 states, 16572 states have (on average 1.1336591841660633) internal successors, (18787), 16572 states have internal predecessors, (18787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16573 states to 16573 states and 18787 transitions. [2023-12-21 13:23:14,574 INFO L78 Accepts]: Start accepts. Automaton has 16573 states and 18787 transitions. Word has length 102 [2023-12-21 13:23:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:14,574 INFO L495 AbstractCegarLoop]: Abstraction has 16573 states and 18787 transitions. [2023-12-21 13:23:14,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16573 states and 18787 transitions. [2023-12-21 13:23:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:14,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:14,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 13:23:14,577 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:14,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1231594007, now seen corresponding path program 1 times [2023-12-21 13:23:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128716586] [2023-12-21 13:23:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:23:15,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128716586] [2023-12-21 13:23:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128716586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:15,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:15,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:23:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776131403] [2023-12-21 13:23:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:15,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:23:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:23:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:23:15,255 INFO L87 Difference]: Start difference. First operand 16573 states and 18787 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:15,874 INFO L93 Difference]: Finished difference Result 19263 states and 21864 transitions. [2023-12-21 13:23:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:23:15,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:15,890 INFO L225 Difference]: With dead ends: 19263 [2023-12-21 13:23:15,890 INFO L226 Difference]: Without dead ends: 17931 [2023-12-21 13:23:15,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:23:15,895 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 2545 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:15,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 2584 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:23:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17931 states. [2023-12-21 13:23:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17931 to 16474. [2023-12-21 13:23:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16474 states, 16473 states have (on average 1.133916105141747) internal successors, (18679), 16473 states have internal predecessors, (18679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16474 states to 16474 states and 18679 transitions. [2023-12-21 13:23:16,033 INFO L78 Accepts]: Start accepts. Automaton has 16474 states and 18679 transitions. Word has length 102 [2023-12-21 13:23:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:16,033 INFO L495 AbstractCegarLoop]: Abstraction has 16474 states and 18679 transitions. [2023-12-21 13:23:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 16474 states and 18679 transitions. [2023-12-21 13:23:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:23:16,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:16,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 13:23:16,036 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2020457129, now seen corresponding path program 1 times [2023-12-21 13:23:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393813682] [2023-12-21 13:23:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393813682] [2023-12-21 13:23:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393813682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070640417] [2023-12-21 13:23:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:16,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:16,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:16,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:16,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 13:23:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:16,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:23:16,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:17,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:17,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070640417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:17,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:17,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 35 [2023-12-21 13:23:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237669657] [2023-12-21 13:23:17,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:17,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 13:23:17,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 13:23:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:23:17,795 INFO L87 Difference]: Start difference. First operand 16474 states and 18679 transitions. Second operand has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:19,687 INFO L93 Difference]: Finished difference Result 19023 states and 21525 transitions. [2023-12-21 13:23:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 13:23:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:23:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:19,703 INFO L225 Difference]: With dead ends: 19023 [2023-12-21 13:23:19,703 INFO L226 Difference]: Without dead ends: 17152 [2023-12-21 13:23:19,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=724, Invalid=3308, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 13:23:19,710 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 4590 mSDsluCounter, 7938 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 8537 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:19,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4590 Valid, 8537 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:23:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17152 states. [2023-12-21 13:23:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17152 to 15836. [2023-12-21 13:23:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15836 states, 15835 states have (on average 1.1328070729396906) internal successors, (17938), 15835 states have internal predecessors, (17938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15836 states to 15836 states and 17938 transitions. [2023-12-21 13:23:19,840 INFO L78 Accepts]: Start accepts. Automaton has 15836 states and 17938 transitions. Word has length 102 [2023-12-21 13:23:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:19,841 INFO L495 AbstractCegarLoop]: Abstraction has 15836 states and 17938 transitions. [2023-12-21 13:23:19,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 15836 states and 17938 transitions. [2023-12-21 13:23:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:23:19,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:19,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:19,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-12-21 13:23:20,044 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:20,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1674316790, now seen corresponding path program 1 times [2023-12-21 13:23:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56338343] [2023-12-21 13:23:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:23:20,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:20,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56338343] [2023-12-21 13:23:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56338343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:20,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:20,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:23:20,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174051589] [2023-12-21 13:23:20,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:20,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:23:20,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:23:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:23:20,425 INFO L87 Difference]: Start difference. First operand 15836 states and 17938 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:21,339 INFO L93 Difference]: Finished difference Result 24570 states and 27964 transitions. [2023-12-21 13:23:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:23:21,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:23:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:21,361 INFO L225 Difference]: With dead ends: 24570 [2023-12-21 13:23:21,361 INFO L226 Difference]: Without dead ends: 23773 [2023-12-21 13:23:21,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:23:21,368 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2772 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:21,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2772 Valid, 2527 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:23:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23773 states. [2023-12-21 13:23:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23773 to 15748. [2023-12-21 13:23:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15748 states, 15747 states have (on average 1.1329777100400076) internal successors, (17841), 15747 states have internal predecessors, (17841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 17841 transitions. [2023-12-21 13:23:21,517 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 17841 transitions. Word has length 103 [2023-12-21 13:23:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:21,517 INFO L495 AbstractCegarLoop]: Abstraction has 15748 states and 17841 transitions. [2023-12-21 13:23:21,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 17841 transitions. [2023-12-21 13:23:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:23:21,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:21,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-21 13:23:21,521 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:21,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 514193784, now seen corresponding path program 1 times [2023-12-21 13:23:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401157688] [2023-12-21 13:23:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:21,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:21,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401157688] [2023-12-21 13:23:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401157688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:21,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087009068] [2023-12-21 13:23:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:21,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:21,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:21,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 13:23:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:21,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:23:21,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:22,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087009068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:23,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:23,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 30 [2023-12-21 13:23:23,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926450878] [2023-12-21 13:23:23,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:23,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:23:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:23:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:23:23,249 INFO L87 Difference]: Start difference. First operand 15748 states and 17841 transitions. Second operand has 30 states, 30 states have (on average 9.633333333333333) internal successors, (289), 30 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:35,232 INFO L93 Difference]: Finished difference Result 39695 states and 44914 transitions. [2023-12-21 13:23:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 13:23:35,233 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.633333333333333) internal successors, (289), 30 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:23:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:35,269 INFO L225 Difference]: With dead ends: 39695 [2023-12-21 13:23:35,269 INFO L226 Difference]: Without dead ends: 37589 [2023-12-21 13:23:35,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18509 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=7119, Invalid=42833, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 13:23:35,281 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 4928 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 6740 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 6780 SdHoareTripleChecker+Invalid, 6880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 6740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:35,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4928 Valid, 6780 Invalid, 6880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 6740 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 13:23:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37589 states. [2023-12-21 13:23:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37589 to 16021. [2023-12-21 13:23:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16021 states, 16020 states have (on average 1.133458177278402) internal successors, (18158), 16020 states have internal predecessors, (18158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16021 states to 16021 states and 18158 transitions. [2023-12-21 13:23:35,501 INFO L78 Accepts]: Start accepts. Automaton has 16021 states and 18158 transitions. Word has length 103 [2023-12-21 13:23:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:35,501 INFO L495 AbstractCegarLoop]: Abstraction has 16021 states and 18158 transitions. [2023-12-21 13:23:35,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.633333333333333) internal successors, (289), 30 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 16021 states and 18158 transitions. [2023-12-21 13:23:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:23:35,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:35,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:35,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:35,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:35,704 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:35,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1619667012, now seen corresponding path program 1 times [2023-12-21 13:23:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:35,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567714010] [2023-12-21 13:23:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567714010] [2023-12-21 13:23:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567714010] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924240652] [2023-12-21 13:23:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:36,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:36,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:36,440 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:36,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 13:23:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:36,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:23:36,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:37,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:23:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924240652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:23:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 29 [2023-12-21 13:23:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722893058] [2023-12-21 13:23:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:37,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:23:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:23:37,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:23:37,679 INFO L87 Difference]: Start difference. First operand 16021 states and 18158 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:38,989 INFO L93 Difference]: Finished difference Result 30463 states and 34667 transitions. [2023-12-21 13:23:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 13:23:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:23:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:39,017 INFO L225 Difference]: With dead ends: 30463 [2023-12-21 13:23:39,017 INFO L226 Difference]: Without dead ends: 28194 [2023-12-21 13:23:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=323, Invalid=2127, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 13:23:39,026 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2407 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:39,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 3516 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:23:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28194 states. [2023-12-21 13:23:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28194 to 15642. [2023-12-21 13:23:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15642 states, 15641 states have (on average 1.1304264433220383) internal successors, (17681), 15641 states have internal predecessors, (17681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15642 states to 15642 states and 17681 transitions. [2023-12-21 13:23:39,189 INFO L78 Accepts]: Start accepts. Automaton has 15642 states and 17681 transitions. Word has length 103 [2023-12-21 13:23:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:39,189 INFO L495 AbstractCegarLoop]: Abstraction has 15642 states and 17681 transitions. [2023-12-21 13:23:39,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 15642 states and 17681 transitions. [2023-12-21 13:23:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:23:39,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:39,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:39,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 13:23:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:39,392 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash 802018562, now seen corresponding path program 1 times [2023-12-21 13:23:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365146058] [2023-12-21 13:23:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:40,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365146058] [2023-12-21 13:23:40,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365146058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:40,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496119279] [2023-12-21 13:23:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:40,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:40,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:40,257 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:40,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 13:23:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:40,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 13:23:40,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:41,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:23:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496119279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:23:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 30 [2023-12-21 13:23:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875358444] [2023-12-21 13:23:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:41,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:23:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:23:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:23:41,136 INFO L87 Difference]: Start difference. First operand 15642 states and 17681 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:42,140 INFO L93 Difference]: Finished difference Result 16407 states and 18561 transitions. [2023-12-21 13:23:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:23:42,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:23:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:42,154 INFO L225 Difference]: With dead ends: 16407 [2023-12-21 13:23:42,154 INFO L226 Difference]: Without dead ends: 15194 [2023-12-21 13:23:42,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 13:23:42,159 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 853 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:42,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2027 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:23:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15194 states. [2023-12-21 13:23:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15194 to 14986. [2023-12-21 13:23:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14986 states, 14985 states have (on average 1.1300633967300635) internal successors, (16934), 14985 states have internal predecessors, (16934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14986 states to 14986 states and 16934 transitions. [2023-12-21 13:23:42,273 INFO L78 Accepts]: Start accepts. Automaton has 14986 states and 16934 transitions. Word has length 103 [2023-12-21 13:23:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 14986 states and 16934 transitions. [2023-12-21 13:23:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 14986 states and 16934 transitions. [2023-12-21 13:23:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:23:42,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:42,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:42,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 13:23:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-21 13:23:42,476 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:42,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1159860841, now seen corresponding path program 1 times [2023-12-21 13:23:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105264158] [2023-12-21 13:23:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:43,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105264158] [2023-12-21 13:23:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105264158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:43,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:43,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 13:23:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858272580] [2023-12-21 13:23:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 13:23:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 13:23:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:23:43,642 INFO L87 Difference]: Start difference. First operand 14986 states and 16934 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:47,011 INFO L93 Difference]: Finished difference Result 27587 states and 31558 transitions. [2023-12-21 13:23:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 13:23:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-21 13:23:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:47,036 INFO L225 Difference]: With dead ends: 27587 [2023-12-21 13:23:47,036 INFO L226 Difference]: Without dead ends: 26847 [2023-12-21 13:23:47,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=453, Invalid=2199, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:23:47,043 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1879 mSDsluCounter, 8322 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 8986 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:47,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 8986 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:23:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26847 states. [2023-12-21 13:23:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26847 to 15001. [2023-12-21 13:23:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15001 states, 15000 states have (on average 1.1300666666666668) internal successors, (16951), 15000 states have internal predecessors, (16951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15001 states to 15001 states and 16951 transitions. [2023-12-21 13:23:47,200 INFO L78 Accepts]: Start accepts. Automaton has 15001 states and 16951 transitions. Word has length 104 [2023-12-21 13:23:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:47,200 INFO L495 AbstractCegarLoop]: Abstraction has 15001 states and 16951 transitions. [2023-12-21 13:23:47,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15001 states and 16951 transitions. [2023-12-21 13:23:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:23:47,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:47,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:47,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 13:23:47,202 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:47,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -604955768, now seen corresponding path program 1 times [2023-12-21 13:23:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134871130] [2023-12-21 13:23:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:47,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:23:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134871130] [2023-12-21 13:23:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134871130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:23:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494894157] [2023-12-21 13:23:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:23:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:23:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:23:47,255 INFO L87 Difference]: Start difference. First operand 15001 states and 16951 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:47,563 INFO L93 Difference]: Finished difference Result 23955 states and 27100 transitions. [2023-12-21 13:23:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:23:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-21 13:23:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:47,581 INFO L225 Difference]: With dead ends: 23955 [2023-12-21 13:23:47,581 INFO L226 Difference]: Without dead ends: 20576 [2023-12-21 13:23:47,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:47,588 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 356 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:47,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 899 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:23:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20576 states. [2023-12-21 13:23:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20576 to 16097. [2023-12-21 13:23:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16097 states, 16096 states have (on average 1.1309020874751492) internal successors, (18203), 16096 states have internal predecessors, (18203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16097 states to 16097 states and 18203 transitions. [2023-12-21 13:23:47,728 INFO L78 Accepts]: Start accepts. Automaton has 16097 states and 18203 transitions. Word has length 104 [2023-12-21 13:23:47,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:47,728 INFO L495 AbstractCegarLoop]: Abstraction has 16097 states and 18203 transitions. [2023-12-21 13:23:47,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 16097 states and 18203 transitions. [2023-12-21 13:23:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:23:47,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:47,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:47,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-21 13:23:47,731 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:47,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1406740484, now seen corresponding path program 1 times [2023-12-21 13:23:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411695352] [2023-12-21 13:23:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411695352] [2023-12-21 13:23:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411695352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897104811] [2023-12-21 13:23:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:48,074 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:48,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 13:23:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:48,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:23:48,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:48,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:49,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897104811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:49,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:49,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-21 13:23:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339187027] [2023-12-21 13:23:49,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:23:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:23:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:23:49,828 INFO L87 Difference]: Start difference. First operand 16097 states and 18203 transitions. Second operand has 30 states, 30 states have (on average 9.066666666666666) internal successors, (272), 29 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:52,765 INFO L93 Difference]: Finished difference Result 29443 states and 33365 transitions. [2023-12-21 13:23:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 13:23:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.066666666666666) internal successors, (272), 29 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:23:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:52,793 INFO L225 Difference]: With dead ends: 29443 [2023-12-21 13:23:52,793 INFO L226 Difference]: Without dead ends: 28596 [2023-12-21 13:23:52,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=939, Invalid=2843, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 13:23:52,801 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 4222 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4222 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:52,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4222 Valid, 3787 Invalid, 4255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:23:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28596 states. [2023-12-21 13:23:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28596 to 15901. [2023-12-21 13:23:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15900 states have (on average 1.130314465408805) internal successors, (17972), 15900 states have internal predecessors, (17972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 17972 transitions. [2023-12-21 13:23:52,967 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 17972 transitions. Word has length 106 [2023-12-21 13:23:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:52,968 INFO L495 AbstractCegarLoop]: Abstraction has 15901 states and 17972 transitions. [2023-12-21 13:23:52,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.066666666666666) internal successors, (272), 29 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 17972 transitions. [2023-12-21 13:23:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:23:52,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:52,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:52,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-21 13:23:53,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:53,170 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:53,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2135414125, now seen corresponding path program 1 times [2023-12-21 13:23:53,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:53,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225640976] [2023-12-21 13:23:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:53,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:23:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225640976] [2023-12-21 13:23:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225640976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:53,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:23:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938918166] [2023-12-21 13:23:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:23:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:23:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:23:53,312 INFO L87 Difference]: Start difference. First operand 15901 states and 17972 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:53,819 INFO L93 Difference]: Finished difference Result 19351 states and 21902 transitions. [2023-12-21 13:23:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:23:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:23:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:53,835 INFO L225 Difference]: With dead ends: 19351 [2023-12-21 13:23:53,835 INFO L226 Difference]: Without dead ends: 17596 [2023-12-21 13:23:53,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:23:53,840 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1204 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:53,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 1364 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:23:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17596 states. [2023-12-21 13:23:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17596 to 15901. [2023-12-21 13:23:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15900 states have (on average 1.130251572327044) internal successors, (17971), 15900 states have internal predecessors, (17971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 17971 transitions. [2023-12-21 13:23:53,970 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 17971 transitions. Word has length 106 [2023-12-21 13:23:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:53,970 INFO L495 AbstractCegarLoop]: Abstraction has 15901 states and 17971 transitions. [2023-12-21 13:23:53,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 17971 transitions. [2023-12-21 13:23:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 13:23:53,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:53,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:53,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-21 13:23:53,973 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:53,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1074019565, now seen corresponding path program 1 times [2023-12-21 13:23:53,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:53,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705398265] [2023-12-21 13:23:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705398265] [2023-12-21 13:23:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705398265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:23:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849998668] [2023-12-21 13:23:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:54,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:23:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:23:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:23:54,279 INFO L87 Difference]: Start difference. First operand 15901 states and 17971 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:55,324 INFO L93 Difference]: Finished difference Result 20124 states and 22895 transitions. [2023-12-21 13:23:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:23:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-21 13:23:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:55,338 INFO L225 Difference]: With dead ends: 20124 [2023-12-21 13:23:55,338 INFO L226 Difference]: Without dead ends: 19147 [2023-12-21 13:23:55,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:23:55,343 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1488 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1944 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:23:55,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2023-12-21 13:23:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 16863. [2023-12-21 13:23:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16863 states, 16862 states have (on average 1.1308860158937255) internal successors, (19069), 16862 states have internal predecessors, (19069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16863 states to 16863 states and 19069 transitions. [2023-12-21 13:23:55,467 INFO L78 Accepts]: Start accepts. Automaton has 16863 states and 19069 transitions. Word has length 107 [2023-12-21 13:23:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:55,467 INFO L495 AbstractCegarLoop]: Abstraction has 16863 states and 19069 transitions. [2023-12-21 13:23:55,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 16863 states and 19069 transitions. [2023-12-21 13:23:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:23:55,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:55,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:55,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-21 13:23:55,469 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:23:55,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -386929133, now seen corresponding path program 1 times [2023-12-21 13:23:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094035133] [2023-12-21 13:23:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094035133] [2023-12-21 13:23:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094035133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437057828] [2023-12-21 13:23:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:55,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:55,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:55,851 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:55,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 13:23:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:56,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 13:23:56,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:56,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437057828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:58,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 44 [2023-12-21 13:23:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827378942] [2023-12-21 13:23:58,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 13:23:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 13:23:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 13:23:58,322 INFO L87 Difference]: Start difference. First operand 16863 states and 19069 transitions. Second operand has 44 states, 44 states have (on average 6.840909090909091) internal successors, (301), 44 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:07,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:07,513 INFO L93 Difference]: Finished difference Result 47693 states and 54246 transitions. [2023-12-21 13:24:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-21 13:24:07,514 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.840909090909091) internal successors, (301), 44 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 13:24:07,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:07,559 INFO L225 Difference]: With dead ends: 47693 [2023-12-21 13:24:07,559 INFO L226 Difference]: Without dead ends: 44097 [2023-12-21 13:24:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4941 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2487, Invalid=17819, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 13:24:07,576 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 5654 mSDsluCounter, 22992 mSDsCounter, 0 mSdLazyCounter, 8495 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5654 SdHoareTripleChecker+Valid, 23826 SdHoareTripleChecker+Invalid, 8546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 8495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:07,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5654 Valid, 23826 Invalid, 8546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 8495 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 13:24:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44097 states. [2023-12-21 13:24:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44097 to 17376. [2023-12-21 13:24:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 17375 states have (on average 1.1292661870503597) internal successors, (19621), 17375 states have internal predecessors, (19621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 19621 transitions. [2023-12-21 13:24:07,820 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 19621 transitions. Word has length 108 [2023-12-21 13:24:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:07,820 INFO L495 AbstractCegarLoop]: Abstraction has 17376 states and 19621 transitions. [2023-12-21 13:24:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.840909090909091) internal successors, (301), 44 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 19621 transitions. [2023-12-21 13:24:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:24:07,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:07,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:07,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-21 13:24:08,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:08,023 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:24:08,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1867825015, now seen corresponding path program 1 times [2023-12-21 13:24:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605910701] [2023-12-21 13:24:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605910701] [2023-12-21 13:24:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605910701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468546511] [2023-12-21 13:24:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:08,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:08,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:08,474 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:24:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 13:24:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:08,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 13:24:08,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:24:10,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:24:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468546511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:10,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:24:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [17] total 34 [2023-12-21 13:24:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553088406] [2023-12-21 13:24:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:24:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:24:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:24:10,644 INFO L87 Difference]: Start difference. First operand 17376 states and 19621 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:13,396 INFO L93 Difference]: Finished difference Result 26915 states and 30496 transitions. [2023-12-21 13:24:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:24:13,397 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 13:24:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:13,422 INFO L225 Difference]: With dead ends: 26915 [2023-12-21 13:24:13,423 INFO L226 Difference]: Without dead ends: 26431 [2023-12-21 13:24:13,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 13:24:13,430 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1989 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:13,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 3637 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 13:24:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26431 states. [2023-12-21 13:24:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26431 to 17282. [2023-12-21 13:24:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17282 states, 17281 states have (on average 1.1290434581332098) internal successors, (19511), 17281 states have internal predecessors, (19511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17282 states to 17282 states and 19511 transitions. [2023-12-21 13:24:13,599 INFO L78 Accepts]: Start accepts. Automaton has 17282 states and 19511 transitions. Word has length 108 [2023-12-21 13:24:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:13,599 INFO L495 AbstractCegarLoop]: Abstraction has 17282 states and 19511 transitions. [2023-12-21 13:24:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 17282 states and 19511 transitions. [2023-12-21 13:24:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:24:13,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:13,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:13,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 13:24:13,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:13,802 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:24:13,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1979629966, now seen corresponding path program 1 times [2023-12-21 13:24:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573727994] [2023-12-21 13:24:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573727994] [2023-12-21 13:24:14,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573727994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874348423] [2023-12-21 13:24:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:14,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:14,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:14,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:24:14,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 13:24:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:14,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:24:14,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:14,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:24:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874348423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:24:15,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:24:15,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 25 [2023-12-21 13:24:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242540403] [2023-12-21 13:24:15,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:24:15,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 13:24:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 13:24:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:24:15,255 INFO L87 Difference]: Start difference. First operand 17282 states and 19511 transitions. Second operand has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:16,667 INFO L93 Difference]: Finished difference Result 24002 states and 26984 transitions. [2023-12-21 13:24:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 13:24:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:24:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:16,686 INFO L225 Difference]: With dead ends: 24002 [2023-12-21 13:24:16,686 INFO L226 Difference]: Without dead ends: 23053 [2023-12-21 13:24:16,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 13:24:16,694 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1987 mSDsluCounter, 7071 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 7658 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:16,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 7658 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:24:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23053 states. [2023-12-21 13:24:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23053 to 17791. [2023-12-21 13:24:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17791 states, 17790 states have (on average 1.128105677346824) internal successors, (20069), 17790 states have internal predecessors, (20069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17791 states to 17791 states and 20069 transitions. [2023-12-21 13:24:16,872 INFO L78 Accepts]: Start accepts. Automaton has 17791 states and 20069 transitions. Word has length 109 [2023-12-21 13:24:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:16,872 INFO L495 AbstractCegarLoop]: Abstraction has 17791 states and 20069 transitions. [2023-12-21 13:24:16,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 17791 states and 20069 transitions. [2023-12-21 13:24:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:24:16,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:16,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:16,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 13:24:17,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-12-21 13:24:17,076 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-21 13:24:17,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -398119967, now seen corresponding path program 1 times [2023-12-21 13:24:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881792568] [2023-12-21 13:24:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat