/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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:43:30,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:43:30,302 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 13:43:30,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:43:30,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:43:30,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:43:30,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:43:30,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:43:30,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:43:30,332 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:43:30,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:43:30,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:43:30,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:43:30,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:43:30,334 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:43:30,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:43:30,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:43:30,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:43:30,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:43:30,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:43:30,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:43:30,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:43:30,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:43:30,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:43:30,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:43:30,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:43:30,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:43:30,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:43:30,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:43:30,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:43:30,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:43:30,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:43:30,542 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:43:30,545 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:43:30,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:43:31,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:43:31,719 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:43:31,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:43:31,731 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b53d15826/e6f8b976c604420b889781aef6485b38/FLAGf6f1ca794 [2023-12-21 13:43:31,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b53d15826/e6f8b976c604420b889781aef6485b38 [2023-12-21 13:43:31,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:43:31,742 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:43:31,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:43:31,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:43:31,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:43:31,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:43:31" (1/1) ... [2023-12-21 13:43:31,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af67045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:31, skipping insertion in model container [2023-12-21 13:43:31,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:43:31" (1/1) ... [2023-12-21 13:43:31,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:43:31,963 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2023-12-21 13:43:31,981 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2023-12-21 13:43:31,994 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2023-12-21 13:43:31,997 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2023-12-21 13:43:32,002 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2023-12-21 13:43:32,004 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2023-12-21 13:43:32,007 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2023-12-21 13:43:32,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:43:32,050 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:43:32,085 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2023-12-21 13:43:32,127 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2023-12-21 13:43:32,130 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2023-12-21 13:43:32,132 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2023-12-21 13:43:32,135 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2023-12-21 13:43:32,138 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2023-12-21 13:43:32,147 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2023-12-21 13:43:32,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:43:32,193 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:43:32,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32 WrapperNode [2023-12-21 13:43:32,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:43:32,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:43:32,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:43:32,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:43:32,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,259 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1101 [2023-12-21 13:43:32,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:43:32,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:43:32,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:43:32,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:43:32,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,283 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 13:43:32,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:43:32,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:43:32,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:43:32,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:43:32,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (1/1) ... [2023-12-21 13:43:32,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:43:32,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:32,329 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 13:43:32,350 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 13:43:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:43:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:43:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:43:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:43:32,480 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:43:32,482 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:43:33,009 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:43:33,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:43:33,046 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:43:33,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:43:33 BoogieIcfgContainer [2023-12-21 13:43:33,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:43:33,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:43:33,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:43:33,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:43:33,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:43:31" (1/3) ... [2023-12-21 13:43:33,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea8a374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:43:33, skipping insertion in model container [2023-12-21 13:43:33,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:43:32" (2/3) ... [2023-12-21 13:43:33,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea8a374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:43:33, skipping insertion in model container [2023-12-21 13:43:33,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:43:33" (3/3) ... [2023-12-21 13:43:33,055 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:43:33,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:43:33,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-12-21 13:43:33,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:43:33,115 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;@2aa052e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:43:33,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-21 13:43:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 197 states have (on average 1.83248730964467) internal successors, (361), 204 states have internal predecessors, (361), 0 states have call successors, (0), 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 13:43:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 13:43:33,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:33,132 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] [2023-12-21 13:43:33,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:33,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1273195572, now seen corresponding path program 1 times [2023-12-21 13:43:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:33,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894590606] [2023-12-21 13:43:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:33,473 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 13:43:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894590606] [2023-12-21 13:43:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894590606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:33,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:43:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9681720] [2023-12-21 13:43:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:33,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:33,503 INFO L87 Difference]: Start difference. First operand has 205 states, 197 states have (on average 1.83248730964467) internal successors, (361), 204 states have internal predecessors, (361), 0 states have call successors, (0), 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 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:33,751 INFO L93 Difference]: Finished difference Result 334 states and 565 transitions. [2023-12-21 13:43:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 13:43:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:33,762 INFO L225 Difference]: With dead ends: 334 [2023-12-21 13:43:33,763 INFO L226 Difference]: Without dead ends: 183 [2023-12-21 13:43:33,766 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 13:43:33,770 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 854 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:33,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 239 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-21 13:43:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-21 13:43:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.2727272727272727) internal successors, (224), 182 states have internal predecessors, (224), 0 states have call successors, (0), 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 13:43:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2023-12-21 13:43:33,810 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 46 [2023-12-21 13:43:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:33,810 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2023-12-21 13:43:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2023-12-21 13:43:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 13:43:33,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:33,815 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] [2023-12-21 13:43:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:43:33,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:33,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1862883361, now seen corresponding path program 1 times [2023-12-21 13:43:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835586332] [2023-12-21 13:43:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:33,951 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 13:43:33,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835586332] [2023-12-21 13:43:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835586332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:43:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337479581] [2023-12-21 13:43:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:33,954 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:34,071 INFO L93 Difference]: Finished difference Result 306 states and 385 transitions. [2023-12-21 13:43:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 13:43:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:34,075 INFO L225 Difference]: With dead ends: 306 [2023-12-21 13:43:34,075 INFO L226 Difference]: Without dead ends: 164 [2023-12-21 13:43:34,077 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 13:43:34,078 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 578 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:34,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 125 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-21 13:43:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-21 13:43:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 157 states have (on average 1.286624203821656) internal successors, (202), 163 states have internal predecessors, (202), 0 states have call successors, (0), 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 13:43:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2023-12-21 13:43:34,095 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 47 [2023-12-21 13:43:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:34,095 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2023-12-21 13:43:34,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2023-12-21 13:43:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:43:34,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:34,096 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] [2023-12-21 13:43:34,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:43:34,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:34,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 135868934, now seen corresponding path program 1 times [2023-12-21 13:43:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269908634] [2023-12-21 13:43:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:34,221 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 13:43:34,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:34,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269908634] [2023-12-21 13:43:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269908634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:34,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:34,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:43:34,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045679395] [2023-12-21 13:43:34,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:34,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:34,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:34,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:34,227 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:43:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:34,317 INFO L93 Difference]: Finished difference Result 287 states and 362 transitions. [2023-12-21 13:43:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 13:43:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:34,323 INFO L225 Difference]: With dead ends: 287 [2023-12-21 13:43:34,327 INFO L226 Difference]: Without dead ends: 156 [2023-12-21 13:43:34,329 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 13:43:34,331 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 536 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:34,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 124 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-21 13:43:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-12-21 13:43:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.2885906040268456) internal successors, (192), 155 states have internal predecessors, (192), 0 states have call successors, (0), 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 13:43:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2023-12-21 13:43:34,338 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 48 [2023-12-21 13:43:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:34,339 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2023-12-21 13:43:34,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:43:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2023-12-21 13:43:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:43:34,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:34,342 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] [2023-12-21 13:43:34,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:43:34,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:34,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:34,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1731915121, now seen corresponding path program 1 times [2023-12-21 13:43:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015392042] [2023-12-21 13:43:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:34,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:34,564 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 13:43:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:34,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015392042] [2023-12-21 13:43:34,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015392042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:34,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:34,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:43:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580595] [2023-12-21 13:43:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:34,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:43:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:43:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:43:34,565 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:34,950 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2023-12-21 13:43:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:43:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 13:43:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:34,952 INFO L225 Difference]: With dead ends: 331 [2023-12-21 13:43:34,952 INFO L226 Difference]: Without dead ends: 326 [2023-12-21 13:43:34,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:43:34,953 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 649 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:34,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 605 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:43:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-12-21 13:43:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 156. [2023-12-21 13:43:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.2818791946308725) internal successors, (191), 155 states have internal predecessors, (191), 0 states have call successors, (0), 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 13:43:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2023-12-21 13:43:34,956 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 49 [2023-12-21 13:43:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:34,957 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2023-12-21 13:43:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2023-12-21 13:43:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:43:34,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:34,957 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] [2023-12-21 13:43:34,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:43:34,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:34,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash -650855073, now seen corresponding path program 1 times [2023-12-21 13:43:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719396760] [2023-12-21 13:43:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:35,153 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 13:43:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719396760] [2023-12-21 13:43:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719396760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:43:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273171474] [2023-12-21 13:43:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:43:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:43:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:43:35,155 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:35,534 INFO L93 Difference]: Finished difference Result 390 states and 513 transitions. [2023-12-21 13:43:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:43:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 13:43:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:35,535 INFO L225 Difference]: With dead ends: 390 [2023-12-21 13:43:35,535 INFO L226 Difference]: Without dead ends: 330 [2023-12-21 13:43:35,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:43:35,536 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 755 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:35,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 808 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:43:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-21 13:43:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 156. [2023-12-21 13:43:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.2751677852348993) internal successors, (190), 155 states have internal predecessors, (190), 0 states have call successors, (0), 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 13:43:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 190 transitions. [2023-12-21 13:43:35,539 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 190 transitions. Word has length 49 [2023-12-21 13:43:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 190 transitions. [2023-12-21 13:43:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 190 transitions. [2023-12-21 13:43:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:43:35,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:35,540 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] [2023-12-21 13:43:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:43:35,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:35,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 622927837, now seen corresponding path program 1 times [2023-12-21 13:43:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983267498] [2023-12-21 13:43:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:35,688 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 13:43:35,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983267498] [2023-12-21 13:43:35,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983267498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:35,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:35,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:43:35,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130176483] [2023-12-21 13:43:35,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:35,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:43:35,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:43:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:43:35,693 INFO L87 Difference]: Start difference. First operand 156 states and 190 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:35,881 INFO L93 Difference]: Finished difference Result 311 states and 388 transitions. [2023-12-21 13:43:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:43:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 13:43:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:35,883 INFO L225 Difference]: With dead ends: 311 [2023-12-21 13:43:35,884 INFO L226 Difference]: Without dead ends: 228 [2023-12-21 13:43:35,884 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 13:43:35,887 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 753 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:35,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 420 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-21 13:43:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 156. [2023-12-21 13:43:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.2684563758389262) internal successors, (189), 155 states have internal predecessors, (189), 0 states have call successors, (0), 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 13:43:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 189 transitions. [2023-12-21 13:43:35,890 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 189 transitions. Word has length 49 [2023-12-21 13:43:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:35,890 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 189 transitions. [2023-12-21 13:43:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:43:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 189 transitions. [2023-12-21 13:43:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:43:35,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:35,891 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 13:43:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:43:35,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:35,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 359581070, now seen corresponding path program 1 times [2023-12-21 13:43:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191685690] [2023-12-21 13:43:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:35,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:36,303 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 13:43:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191685690] [2023-12-21 13:43:36,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191685690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:36,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:36,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:43:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958717688] [2023-12-21 13:43:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:36,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:43:36,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:43:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:43:36,305 INFO L87 Difference]: Start difference. First operand 156 states and 189 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 13:43:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:36,732 INFO L93 Difference]: Finished difference Result 485 states and 642 transitions. [2023-12-21 13:43:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:43:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 13:43:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:36,734 INFO L225 Difference]: With dead ends: 485 [2023-12-21 13:43:36,734 INFO L226 Difference]: Without dead ends: 409 [2023-12-21 13:43:36,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:43:36,735 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1249 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:36,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1104 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:43:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-21 13:43:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 123. [2023-12-21 13:43:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 122 states have internal predecessors, (150), 0 states have call successors, (0), 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 13:43:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2023-12-21 13:43:36,738 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 51 [2023-12-21 13:43:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:36,738 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2023-12-21 13:43:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 13:43:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2023-12-21 13:43:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:43:36,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:36,738 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 13:43:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:43:36,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:36,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -83474213, now seen corresponding path program 1 times [2023-12-21 13:43:36,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:36,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383517897] [2023-12-21 13:43:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:36,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:37,148 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 13:43:37,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383517897] [2023-12-21 13:43:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383517897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:37,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:43:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303766341] [2023-12-21 13:43:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:43:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:37,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:43:37,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:43:37,150 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 13:43:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:37,753 INFO L93 Difference]: Finished difference Result 523 states and 703 transitions. [2023-12-21 13:43:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:43:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 13:43:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:37,755 INFO L225 Difference]: With dead ends: 523 [2023-12-21 13:43:37,755 INFO L226 Difference]: Without dead ends: 507 [2023-12-21 13:43:37,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:43:37,756 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1199 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:37,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 2290 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:43:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-21 13:43:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 107. [2023-12-21 13:43:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 106 states have internal predecessors, (132), 0 states have call successors, (0), 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 13:43:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2023-12-21 13:43:37,759 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 51 [2023-12-21 13:43:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:37,759 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2023-12-21 13:43:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 13:43:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2023-12-21 13:43:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:43:37,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:37,759 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 13:43:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:43:37,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:37,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -873153248, now seen corresponding path program 1 times [2023-12-21 13:43:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345506656] [2023-12-21 13:43:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:38,019 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 13:43:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345506656] [2023-12-21 13:43:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345506656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 13:43:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234056729] [2023-12-21 13:43:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:38,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:43:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:43:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 13:43:38,021 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 13:43:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:38,357 INFO L93 Difference]: Finished difference Result 272 states and 357 transitions. [2023-12-21 13:43:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:43:38,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 13:43:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:38,358 INFO L225 Difference]: With dead ends: 272 [2023-12-21 13:43:38,358 INFO L226 Difference]: Without dead ends: 211 [2023-12-21 13:43:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:43:38,360 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 591 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 580 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:43:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-21 13:43:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 107. [2023-12-21 13:43:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 106 states have internal predecessors, (131), 0 states have call successors, (0), 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 13:43:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2023-12-21 13:43:38,363 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 52 [2023-12-21 13:43:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:38,364 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2023-12-21 13:43:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 13:43:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2023-12-21 13:43:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:43:38,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:38,364 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 13:43:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:43:38,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:38,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1645932369, now seen corresponding path program 1 times [2023-12-21 13:43:38,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474378147] [2023-12-21 13:43:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:38,917 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 13:43:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474378147] [2023-12-21 13:43:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474378147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 13:43:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138370966] [2023-12-21 13:43:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 13:43:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 13:43:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:43:38,919 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 13:43:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:39,846 INFO L93 Difference]: Finished difference Result 491 states and 662 transitions. [2023-12-21 13:43:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:43:39,846 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 13:43:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:39,849 INFO L225 Difference]: With dead ends: 491 [2023-12-21 13:43:39,849 INFO L226 Difference]: Without dead ends: 485 [2023-12-21 13:43:39,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:43:39,850 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1318 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:39,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 2896 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:43:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-12-21 13:43:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 118. [2023-12-21 13:43:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.25) internal successors, (145), 117 states have internal predecessors, (145), 0 states have call successors, (0), 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 13:43:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 145 transitions. [2023-12-21 13:43:39,854 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 145 transitions. Word has length 54 [2023-12-21 13:43:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:39,854 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 145 transitions. [2023-12-21 13:43:39,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 13:43:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 145 transitions. [2023-12-21 13:43:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:43:39,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:39,854 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 13:43:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:43:39,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:39,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1729762893, now seen corresponding path program 1 times [2023-12-21 13:43:39,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:39,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950103990] [2023-12-21 13:43:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:39,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:40,249 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 13:43:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950103990] [2023-12-21 13:43:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950103990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:43:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867676260] [2023-12-21 13:43:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:43:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:43:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:43:40,251 INFO L87 Difference]: Start difference. First operand 118 states and 145 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 13:43:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:40,894 INFO L93 Difference]: Finished difference Result 458 states and 628 transitions. [2023-12-21 13:43:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:43:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 13:43:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:40,896 INFO L225 Difference]: With dead ends: 458 [2023-12-21 13:43:40,896 INFO L226 Difference]: Without dead ends: 452 [2023-12-21 13:43:40,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:43:40,897 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 902 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:40,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1847 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:43:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-21 13:43:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 101. [2023-12-21 13:43:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.25) internal successors, (125), 100 states have internal predecessors, (125), 0 states have call successors, (0), 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 13:43:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-12-21 13:43:40,900 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 55 [2023-12-21 13:43:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:40,900 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-12-21 13:43:40,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 13:43:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-12-21 13:43:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:43:40,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:40,900 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 13:43:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:43:40,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1767402819, now seen corresponding path program 1 times [2023-12-21 13:43:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159342853] [2023-12-21 13:43:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:40,957 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 13:43:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159342853] [2023-12-21 13:43:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159342853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:43:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12356333] [2023-12-21 13:43:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:40,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:40,959 INFO L87 Difference]: Start difference. First operand 101 states and 125 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 13:43:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,010 INFO L93 Difference]: Finished difference Result 359 states and 503 transitions. [2023-12-21 13:43:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:43:41,010 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 13:43:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,011 INFO L225 Difference]: With dead ends: 359 [2023-12-21 13:43:41,011 INFO L226 Difference]: Without dead ends: 316 [2023-12-21 13:43:41,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:43:41,012 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 479 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 597 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-21 13:43:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 142. [2023-12-21 13:43:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3120567375886525) internal successors, (185), 141 states have internal predecessors, (185), 0 states have call successors, (0), 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 13:43:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 185 transitions. [2023-12-21 13:43:41,015 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 185 transitions. Word has length 72 [2023-12-21 13:43:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,015 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 185 transitions. [2023-12-21 13:43:41,015 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 13:43:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 185 transitions. [2023-12-21 13:43:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:43:41,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,016 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] [2023-12-21 13:43:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:43:41,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1330307651, now seen corresponding path program 1 times [2023-12-21 13:43:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394321891] [2023-12-21 13:43:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,075 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 13:43:41,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394321891] [2023-12-21 13:43:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394321891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:43:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273492835] [2023-12-21 13:43:41,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:41,077 INFO L87 Difference]: Start difference. First operand 142 states and 185 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,112 INFO L93 Difference]: Finished difference Result 437 states and 615 transitions. [2023-12-21 13:43:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:43:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,113 INFO L225 Difference]: With dead ends: 437 [2023-12-21 13:43:41,114 INFO L226 Difference]: Without dead ends: 353 [2023-12-21 13:43:41,114 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 13:43:41,114 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 280 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 417 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-21 13:43:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 224. [2023-12-21 13:43:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.3721973094170403) internal successors, (306), 223 states have internal predecessors, (306), 0 states have call successors, (0), 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 13:43:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 306 transitions. [2023-12-21 13:43:41,121 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 306 transitions. Word has length 74 [2023-12-21 13:43:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,121 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 306 transitions. [2023-12-21 13:43:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 306 transitions. [2023-12-21 13:43:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:43:41,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,122 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] [2023-12-21 13:43:41,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:43:41,122 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 794928439, now seen corresponding path program 1 times [2023-12-21 13:43:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085465475] [2023-12-21 13:43:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,199 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 13:43:41,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085465475] [2023-12-21 13:43:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085465475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:43:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133475608] [2023-12-21 13:43:41,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:41,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:41,201 INFO L87 Difference]: Start difference. First operand 224 states and 306 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,235 INFO L93 Difference]: Finished difference Result 519 states and 736 transitions. [2023-12-21 13:43:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:43:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,236 INFO L225 Difference]: With dead ends: 519 [2023-12-21 13:43:41,236 INFO L226 Difference]: Without dead ends: 435 [2023-12-21 13:43:41,237 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 13:43:41,237 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 290 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 428 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-21 13:43:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 347. [2023-12-21 13:43:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.407514450867052) internal successors, (487), 346 states have internal predecessors, (487), 0 states have call successors, (0), 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 13:43:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 487 transitions. [2023-12-21 13:43:41,245 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 487 transitions. Word has length 74 [2023-12-21 13:43:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,245 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 487 transitions. [2023-12-21 13:43:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 487 transitions. [2023-12-21 13:43:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:43:41,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,245 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] [2023-12-21 13:43:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:43:41,246 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 670344324, now seen corresponding path program 1 times [2023-12-21 13:43:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731153118] [2023-12-21 13:43:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,279 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 13:43:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731153118] [2023-12-21 13:43:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731153118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762227801] [2023-12-21 13:43:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:41,281 INFO L87 Difference]: Start difference. First operand 347 states and 487 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,299 INFO L93 Difference]: Finished difference Result 638 states and 913 transitions. [2023-12-21 13:43:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:43:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,301 INFO L225 Difference]: With dead ends: 638 [2023-12-21 13:43:41,301 INFO L226 Difference]: Without dead ends: 349 [2023-12-21 13:43:41,302 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 13:43:41,302 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 50 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 198 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-21 13:43:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2023-12-21 13:43:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.3959537572254335) internal successors, (483), 346 states have internal predecessors, (483), 0 states have call successors, (0), 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 13:43:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 483 transitions. [2023-12-21 13:43:41,308 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 483 transitions. Word has length 74 [2023-12-21 13:43:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,308 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 483 transitions. [2023-12-21 13:43:41,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 483 transitions. [2023-12-21 13:43:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:43:41,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,309 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] [2023-12-21 13:43:41,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:43:41,309 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -98948669, now seen corresponding path program 1 times [2023-12-21 13:43:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039633044] [2023-12-21 13:43:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,337 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 13:43:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039633044] [2023-12-21 13:43:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039633044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:41,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434109177] [2023-12-21 13:43:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:41,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:41,340 INFO L87 Difference]: Start difference. First operand 347 states and 483 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,355 INFO L93 Difference]: Finished difference Result 880 states and 1250 transitions. [2023-12-21 13:43:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:43:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,357 INFO L225 Difference]: With dead ends: 880 [2023-12-21 13:43:41,358 INFO L226 Difference]: Without dead ends: 591 [2023-12-21 13:43:41,358 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 13:43:41,358 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 50 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 281 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-21 13:43:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2023-12-21 13:43:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.3843537414965987) internal successors, (814), 588 states have internal predecessors, (814), 0 states have call successors, (0), 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 13:43:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 814 transitions. [2023-12-21 13:43:41,367 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 814 transitions. Word has length 74 [2023-12-21 13:43:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 814 transitions. [2023-12-21 13:43:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 814 transitions. [2023-12-21 13:43:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:43:41,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,368 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] [2023-12-21 13:43:41,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:43:41,368 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2082611331, now seen corresponding path program 1 times [2023-12-21 13:43:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14021285] [2023-12-21 13:43:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,430 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 13:43:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14021285] [2023-12-21 13:43:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14021285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:43:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141930132] [2023-12-21 13:43:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:43:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:43:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:43:41,432 INFO L87 Difference]: Start difference. First operand 589 states and 814 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,476 INFO L93 Difference]: Finished difference Result 1050 states and 1466 transitions. [2023-12-21 13:43:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:43:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:43:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,479 INFO L225 Difference]: With dead ends: 1050 [2023-12-21 13:43:41,479 INFO L226 Difference]: Without dead ends: 897 [2023-12-21 13:43:41,479 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 13:43:41,480 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 282 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 459 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-21 13:43:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 740. [2023-12-21 13:43:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.3910690121786198) internal successors, (1028), 739 states have internal predecessors, (1028), 0 states have call successors, (0), 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 13:43:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1028 transitions. [2023-12-21 13:43:41,491 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1028 transitions. Word has length 74 [2023-12-21 13:43:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,491 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1028 transitions. [2023-12-21 13:43:41,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:43:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1028 transitions. [2023-12-21 13:43:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:43:41,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,493 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, 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 13:43:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:43:41,493 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -753330043, now seen corresponding path program 1 times [2023-12-21 13:43:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901975] [2023-12-21 13:43:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,550 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 13:43:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901975] [2023-12-21 13:43:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944695052] [2023-12-21 13:43:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:41,552 INFO L87 Difference]: Start difference. First operand 740 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:43:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,566 INFO L93 Difference]: Finished difference Result 1861 states and 2599 transitions. [2023-12-21 13:43:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-21 13:43:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,569 INFO L225 Difference]: With dead ends: 1861 [2023-12-21 13:43:41,569 INFO L226 Difference]: Without dead ends: 1179 [2023-12-21 13:43:41,570 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 13:43:41,571 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 264 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-12-21 13:43:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1105. [2023-12-21 13:43:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.3804347826086956) internal successors, (1524), 1104 states have internal predecessors, (1524), 0 states have call successors, (0), 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 13:43:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1524 transitions. [2023-12-21 13:43:41,584 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1524 transitions. Word has length 75 [2023-12-21 13:43:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,584 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1524 transitions. [2023-12-21 13:43:41,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:43:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1524 transitions. [2023-12-21 13:43:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:43:41,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,586 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] [2023-12-21 13:43:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:43:41,586 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1764053275, now seen corresponding path program 1 times [2023-12-21 13:43:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644054913] [2023-12-21 13:43:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,669 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 13:43:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644054913] [2023-12-21 13:43:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644054913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660092380] [2023-12-21 13:43:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:41,672 INFO L87 Difference]: Start difference. First operand 1105 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:43:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,689 INFO L93 Difference]: Finished difference Result 3091 states and 4259 transitions. [2023-12-21 13:43:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:43:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,694 INFO L225 Difference]: With dead ends: 3091 [2023-12-21 13:43:41,695 INFO L226 Difference]: Without dead ends: 2044 [2023-12-21 13:43:41,697 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 13:43:41,698 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 52 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2023-12-21 13:43:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1934. [2023-12-21 13:43:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 1.362648732540093) internal successors, (2634), 1933 states have internal predecessors, (2634), 0 states have call successors, (0), 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 13:43:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2634 transitions. [2023-12-21 13:43:41,731 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2634 transitions. Word has length 76 [2023-12-21 13:43:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,731 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2634 transitions. [2023-12-21 13:43:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:43:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2634 transitions. [2023-12-21 13:43:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:43:41,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,732 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] [2023-12-21 13:43:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:43:41,732 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1616355032, now seen corresponding path program 1 times [2023-12-21 13:43:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601806951] [2023-12-21 13:43:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:41,814 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 13:43:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601806951] [2023-12-21 13:43:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601806951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610227853] [2023-12-21 13:43:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:41,816 INFO L87 Difference]: Start difference. First operand 1934 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:41,840 INFO L93 Difference]: Finished difference Result 5470 states and 7400 transitions. [2023-12-21 13:43:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 13:43:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:41,849 INFO L225 Difference]: With dead ends: 5470 [2023-12-21 13:43:41,849 INFO L226 Difference]: Without dead ends: 3594 [2023-12-21 13:43:41,852 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 13:43:41,853 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 261 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2023-12-21 13:43:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3376. [2023-12-21 13:43:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3375 states have (on average 1.3342222222222222) internal successors, (4503), 3375 states have internal predecessors, (4503), 0 states have call successors, (0), 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 13:43:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4503 transitions. [2023-12-21 13:43:41,907 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4503 transitions. Word has length 77 [2023-12-21 13:43:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:41,907 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4503 transitions. [2023-12-21 13:43:41,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4503 transitions. [2023-12-21 13:43:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:43:41,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:41,908 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] [2023-12-21 13:43:41,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:43:41,908 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:41,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2121296140, now seen corresponding path program 1 times [2023-12-21 13:43:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:41,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525800453] [2023-12-21 13:43:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:42,021 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 13:43:42,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:42,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525800453] [2023-12-21 13:43:42,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525800453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:42,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:43:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676498054] [2023-12-21 13:43:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:42,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:43:42,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:43:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:43:42,023 INFO L87 Difference]: Start difference. First operand 3376 states and 4503 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:43:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:42,078 INFO L93 Difference]: Finished difference Result 5220 states and 6938 transitions. [2023-12-21 13:43:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:43:42,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 13:43:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:42,091 INFO L225 Difference]: With dead ends: 5220 [2023-12-21 13:43:42,091 INFO L226 Difference]: Without dead ends: 5218 [2023-12-21 13:43:42,093 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 13:43:42,094 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 201 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:42,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 623 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2023-12-21 13:43:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 3472. [2023-12-21 13:43:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 1.313454335926246) internal successors, (4559), 3471 states have internal predecessors, (4559), 0 states have call successors, (0), 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 13:43:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 4559 transitions. [2023-12-21 13:43:42,150 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 4559 transitions. Word has length 78 [2023-12-21 13:43:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:42,150 INFO L495 AbstractCegarLoop]: Abstraction has 3472 states and 4559 transitions. [2023-12-21 13:43:42,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:43:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 4559 transitions. [2023-12-21 13:43:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:43:42,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:42,151 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] [2023-12-21 13:43:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:43:42,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:42,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash 305590840, now seen corresponding path program 1 times [2023-12-21 13:43:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289400968] [2023-12-21 13:43:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:42,181 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 13:43:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289400968] [2023-12-21 13:43:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289400968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:42,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:42,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146097666] [2023-12-21 13:43:42,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:42,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:42,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:42,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:42,182 INFO L87 Difference]: Start difference. First operand 3472 states and 4559 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:43:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:42,213 INFO L93 Difference]: Finished difference Result 7020 states and 9233 transitions. [2023-12-21 13:43:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:42,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 13:43:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:42,222 INFO L225 Difference]: With dead ends: 7020 [2023-12-21 13:43:42,222 INFO L226 Difference]: Without dead ends: 3606 [2023-12-21 13:43:42,226 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 13:43:42,227 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:42,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 214 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:43:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2023-12-21 13:43:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3604. [2023-12-21 13:43:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 3603 states have (on average 1.2930890924229808) internal successors, (4659), 3603 states have internal predecessors, (4659), 0 states have call successors, (0), 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 13:43:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4659 transitions. [2023-12-21 13:43:42,279 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4659 transitions. Word has length 78 [2023-12-21 13:43:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:42,279 INFO L495 AbstractCegarLoop]: Abstraction has 3604 states and 4659 transitions. [2023-12-21 13:43:42,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:43:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4659 transitions. [2023-12-21 13:43:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:43:42,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:42,281 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] [2023-12-21 13:43:42,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:43:42,281 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:42,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1123966569, now seen corresponding path program 1 times [2023-12-21 13:43:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671165627] [2023-12-21 13:43:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 13:43:42,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:42,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671165627] [2023-12-21 13:43:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671165627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:42,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:43:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184245156] [2023-12-21 13:43:42,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:43:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:43:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:43:42,435 INFO L87 Difference]: Start difference. First operand 3604 states and 4659 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 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 13:43:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:42,643 INFO L93 Difference]: Finished difference Result 10827 states and 13986 transitions. [2023-12-21 13:43:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:43:42,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 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 100 [2023-12-21 13:43:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:42,660 INFO L225 Difference]: With dead ends: 10827 [2023-12-21 13:43:42,661 INFO L226 Difference]: Without dead ends: 7275 [2023-12-21 13:43:42,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:43:42,666 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 325 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:42,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 380 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2023-12-21 13:43:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 3604. [2023-12-21 13:43:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 3603 states have (on average 1.292811545933944) internal successors, (4658), 3603 states have internal predecessors, (4658), 0 states have call successors, (0), 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 13:43:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4658 transitions. [2023-12-21 13:43:42,737 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4658 transitions. Word has length 100 [2023-12-21 13:43:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:42,737 INFO L495 AbstractCegarLoop]: Abstraction has 3604 states and 4658 transitions. [2023-12-21 13:43:42,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 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 13:43:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4658 transitions. [2023-12-21 13:43:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:43:42,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:42,739 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 13:43:42,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:43:42,739 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:43:42,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash 446079846, now seen corresponding path program 1 times [2023-12-21 13:43:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:42,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634600880] [2023-12-21 13:43:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634600880] [2023-12-21 13:43:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634600880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535889743] [2023-12-21 13:43:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:43,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:43,017 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 13:43:43,048 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 13:43:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:43,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:43:43,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:43,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535889743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:44,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-12-21 13:43:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7296136] [2023-12-21 13:43:44,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:43:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:43:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:43:44,954 INFO L87 Difference]: Start difference. First operand 3604 states and 4658 transitions. Second operand has 30 states, 30 states have (on average 9.4) internal successors, (282), 29 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:44:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:17,483 INFO L93 Difference]: Finished difference Result 95053 states and 119933 transitions. [2023-12-21 13:44:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 492 states. [2023-12-21 13:44:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.4) internal successors, (282), 29 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:44:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:17,638 INFO L225 Difference]: With dead ends: 95053 [2023-12-21 13:44:17,638 INFO L226 Difference]: Without dead ends: 91507 [2023-12-21 13:44:17,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 518 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117310 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=24901, Invalid=244979, Unknown=0, NotChecked=0, Total=269880 [2023-12-21 13:44:17,678 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 6027 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 4457 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6027 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 4530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 4457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:17,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6027 Valid, 4069 Invalid, 4530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 4457 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 13:44:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91507 states. [2023-12-21 13:44:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91507 to 21682. [2023-12-21 13:44:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21682 states, 21681 states have (on average 1.2976338729763388) internal successors, (28134), 21681 states have internal predecessors, (28134), 0 states have call successors, (0), 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 13:44:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21682 states to 21682 states and 28134 transitions. [2023-12-21 13:44:18,302 INFO L78 Accepts]: Start accepts. Automaton has 21682 states and 28134 transitions. Word has length 102 [2023-12-21 13:44:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:18,302 INFO L495 AbstractCegarLoop]: Abstraction has 21682 states and 28134 transitions. [2023-12-21 13:44:18,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.4) internal successors, (282), 29 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:44:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21682 states and 28134 transitions. [2023-12-21 13:44:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:44:18,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:18,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:18,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 13:44:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 13:44:18,514 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:44:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -498912012, now seen corresponding path program 1 times [2023-12-21 13:44:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782956329] [2023-12-21 13:44:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782956329] [2023-12-21 13:44:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782956329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794164891] [2023-12-21 13:44:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:19,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:19,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:19,075 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 13:44:19,077 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 13:44:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:19,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:44:19,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:19,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794164891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:20,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-21 13:44:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200126953] [2023-12-21 13:44:20,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:44:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:44:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:44:20,648 INFO L87 Difference]: Start difference. First operand 21682 states and 28134 transitions. Second operand has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 28 states have internal predecessors, (257), 0 states have call successors, (0), 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 13:44:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:25,042 INFO L93 Difference]: Finished difference Result 154729 states and 197870 transitions. [2023-12-21 13:44:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 13:44:25,042 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 28 states have internal predecessors, (257), 0 states have call successors, (0), 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 13:44:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:25,228 INFO L225 Difference]: With dead ends: 154729 [2023-12-21 13:44:25,228 INFO L226 Difference]: Without dead ends: 133150 [2023-12-21 13:44:25,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1932 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1826, Invalid=6364, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 13:44:25,276 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2219 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:25,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 2308 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:44:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133150 states. [2023-12-21 13:44:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133150 to 46693. [2023-12-21 13:44:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46693 states, 46692 states have (on average 1.2887860875524715) internal successors, (60176), 46692 states have internal predecessors, (60176), 0 states have call successors, (0), 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 13:44:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46693 states to 46693 states and 60176 transitions. [2023-12-21 13:44:26,365 INFO L78 Accepts]: Start accepts. Automaton has 46693 states and 60176 transitions. Word has length 103 [2023-12-21 13:44:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,365 INFO L495 AbstractCegarLoop]: Abstraction has 46693 states and 60176 transitions. [2023-12-21 13:44:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 28 states have internal predecessors, (257), 0 states have call successors, (0), 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 13:44:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 46693 states and 60176 transitions. [2023-12-21 13:44:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:44:26,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:26,380 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 13:44:26,579 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,SelfDestructingSolverStorable24 [2023-12-21 13:44:26,579 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:44:26,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1411152920, now seen corresponding path program 1 times [2023-12-21 13:44:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312996782] [2023-12-21 13:44:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:26,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312996782] [2023-12-21 13:44:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312996782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925031635] [2023-12-21 13:44:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:26,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:26,874 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 13:44:26,899 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 13:44:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:44:26,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:27,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925031635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:28,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 13:44:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980461821] [2023-12-21 13:44:28,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:28,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:44:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:44:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:44:28,089 INFO L87 Difference]: Start difference. First operand 46693 states and 60176 transitions. Second operand has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 28 states have internal predecessors, (286), 0 states have call successors, (0), 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 13:44:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:37,017 INFO L93 Difference]: Finished difference Result 315389 states and 398444 transitions. [2023-12-21 13:44:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 13:44:37,017 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 28 states have internal predecessors, (286), 0 states have call successors, (0), 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 13:44:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:37,453 INFO L225 Difference]: With dead ends: 315389 [2023-12-21 13:44:37,454 INFO L226 Difference]: Without dead ends: 296953 [2023-12-21 13:44:37,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19275 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8801, Invalid=40705, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 13:44:37,539 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5022 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5022 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:37,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5022 Valid, 3657 Invalid, 3517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 13:44:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296953 states. [2023-12-21 13:44:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296953 to 74449. [2023-12-21 13:44:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74449 states, 74448 states have (on average 1.2860520094562649) internal successors, (95744), 74448 states have internal predecessors, (95744), 0 states have call successors, (0), 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 13:44:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74449 states to 74449 states and 95744 transitions. [2023-12-21 13:44:39,815 INFO L78 Accepts]: Start accepts. Automaton has 74449 states and 95744 transitions. Word has length 104 [2023-12-21 13:44:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:39,815 INFO L495 AbstractCegarLoop]: Abstraction has 74449 states and 95744 transitions. [2023-12-21 13:44:39,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 28 states have internal predecessors, (286), 0 states have call successors, (0), 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 13:44:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 74449 states and 95744 transitions. [2023-12-21 13:44:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:44:39,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:39,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:39,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 13:44:40,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:40,031 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:44:40,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1416550502, now seen corresponding path program 1 times [2023-12-21 13:44:40,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:40,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477620445] [2023-12-21 13:44:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:40,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:40,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:40,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477620445] [2023-12-21 13:44:40,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477620445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:40,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006528343] [2023-12-21 13:44:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:40,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:40,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:40,190 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 13:44:40,192 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 13:44:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:40,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:44:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:40,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006528343] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:41,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 13:44:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708757732] [2023-12-21 13:44:41,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:44:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:44:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:44:41,510 INFO L87 Difference]: Start difference. First operand 74449 states and 95744 transitions. Second operand has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 28 states have internal predecessors, (298), 0 states have call successors, (0), 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 13:44:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:51,461 INFO L93 Difference]: Finished difference Result 497241 states and 626804 transitions. [2023-12-21 13:44:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 13:44:51,462 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 28 states have internal predecessors, (298), 0 states have call successors, (0), 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 13:44:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:52,470 INFO L225 Difference]: With dead ends: 497241 [2023-12-21 13:44:52,471 INFO L226 Difference]: Without dead ends: 439497 [2023-12-21 13:44:52,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18910 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=8799, Invalid=40707, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 13:44:52,570 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 3721 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3721 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 4314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3721 Valid, 4921 Invalid, 4314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:44:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439497 states. [2023-12-21 13:44:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439497 to 74409. [2023-12-21 13:44:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74409 states, 74408 states have (on average 1.286178905494033) internal successors, (95702), 74408 states have internal predecessors, (95702), 0 states have call successors, (0), 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 13:44:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74409 states to 74409 states and 95702 transitions. [2023-12-21 13:44:55,266 INFO L78 Accepts]: Start accepts. Automaton has 74409 states and 95702 transitions. Word has length 104 [2023-12-21 13:44:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:55,266 INFO L495 AbstractCegarLoop]: Abstraction has 74409 states and 95702 transitions. [2023-12-21 13:44:55,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 28 states have internal predecessors, (298), 0 states have call successors, (0), 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 13:44:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 74409 states and 95702 transitions. [2023-12-21 13:44:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:44:55,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:55,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:55,279 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 13:44:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 13:44:55,482 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:44:55,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash -813367625, now seen corresponding path program 1 times [2023-12-21 13:44:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990177861] [2023-12-21 13:44:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:55,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990177861] [2023-12-21 13:44:56,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990177861] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918222418] [2023-12-21 13:44:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:56,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:56,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:56,163 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 13:44:56,164 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 13:44:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:56,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:44:56,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:56,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918222418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:57,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:57,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 33 [2023-12-21 13:44:57,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995707675] [2023-12-21 13:44:57,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:57,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 13:44:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 13:44:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 13:44:57,417 INFO L87 Difference]: Start difference. First operand 74409 states and 95702 transitions. Second operand has 34 states, 34 states have (on average 8.058823529411764) internal successors, (274), 33 states have internal predecessors, (274), 0 states have call successors, (0), 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 13:45:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:10,869 INFO L93 Difference]: Finished difference Result 304557 states and 388317 transitions. [2023-12-21 13:45:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-12-21 13:45:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.058823529411764) internal successors, (274), 33 states have internal predecessors, (274), 0 states have call successors, (0), 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 13:45:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:11,234 INFO L225 Difference]: With dead ends: 304557 [2023-12-21 13:45:11,234 INFO L226 Difference]: Without dead ends: 282978 [2023-12-21 13:45:11,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25382 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=8314, Invalid=55948, Unknown=0, NotChecked=0, Total=64262 [2023-12-21 13:45:11,298 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 4697 mSDsluCounter, 6888 mSDsCounter, 0 mSdLazyCounter, 6588 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 6588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:11,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4697 Valid, 7336 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 6588 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 13:45:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282978 states. [2023-12-21 13:45:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282978 to 74402. [2023-12-21 13:45:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74402 states, 74401 states have (on average 1.2862058305667934) internal successors, (95695), 74401 states have internal predecessors, (95695), 0 states have call successors, (0), 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 13:45:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74402 states to 74402 states and 95695 transitions. [2023-12-21 13:45:13,213 INFO L78 Accepts]: Start accepts. Automaton has 74402 states and 95695 transitions. Word has length 104 [2023-12-21 13:45:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:13,213 INFO L495 AbstractCegarLoop]: Abstraction has 74402 states and 95695 transitions. [2023-12-21 13:45:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.058823529411764) internal successors, (274), 33 states have internal predecessors, (274), 0 states have call successors, (0), 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 13:45:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 74402 states and 95695 transitions. [2023-12-21 13:45:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:45:13,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:13,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:45:13,225 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 13:45:13,423 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,SelfDestructingSolverStorable27 [2023-12-21 13:45:13,423 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:45:13,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1113985355, now seen corresponding path program 1 times [2023-12-21 13:45:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26342251] [2023-12-21 13:45:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:45:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26342251] [2023-12-21 13:45:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26342251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:45:13,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:45:13,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:45:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773559950] [2023-12-21 13:45:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:45:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:45:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:45:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:45:13,467 INFO L87 Difference]: Start difference. First operand 74402 states and 95695 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 13:45:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:13,856 INFO L93 Difference]: Finished difference Result 142150 states and 183597 transitions. [2023-12-21 13:45:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:45:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 13:45:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:13,927 INFO L225 Difference]: With dead ends: 142150 [2023-12-21 13:45:13,927 INFO L226 Difference]: Without dead ends: 67832 [2023-12-21 13:45:13,962 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 13:45:13,963 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 81 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 100 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:45:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67832 states. [2023-12-21 13:45:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67832 to 67832. [2023-12-21 13:45:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67832 states, 67831 states have (on average 1.2814642272707168) internal successors, (86923), 67831 states have internal predecessors, (86923), 0 states have call successors, (0), 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 13:45:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67832 states to 67832 states and 86923 transitions. [2023-12-21 13:45:14,679 INFO L78 Accepts]: Start accepts. Automaton has 67832 states and 86923 transitions. Word has length 104 [2023-12-21 13:45:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 67832 states and 86923 transitions. [2023-12-21 13:45:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 13:45:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 67832 states and 86923 transitions. [2023-12-21 13:45:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:45:14,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:14,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:45:14,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:45:14,684 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:45:14,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1566276431, now seen corresponding path program 1 times [2023-12-21 13:45:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979632607] [2023-12-21 13:45:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979632607] [2023-12-21 13:45:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979632607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443120646] [2023-12-21 13:45:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:15,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:15,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:15,300 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 13:45:15,302 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 13:45:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:15,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 13:45:15,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:16,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:45:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443120646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:45:19,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:45:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 20] total 55 [2023-12-21 13:45:19,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027592105] [2023-12-21 13:45:19,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:45:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 13:45:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 13:45:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 13:45:19,533 INFO L87 Difference]: Start difference. First operand 67832 states and 86923 transitions. Second operand has 55 states, 55 states have (on average 5.363636363636363) internal successors, (295), 55 states have internal predecessors, (295), 0 states have call successors, (0), 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 13:45:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:57,029 INFO L93 Difference]: Finished difference Result 600475 states and 758857 transitions. [2023-12-21 13:45:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-12-21 13:45:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.363636363636363) internal successors, (295), 55 states have internal predecessors, (295), 0 states have call successors, (0), 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 13:45:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:57,784 INFO L225 Difference]: With dead ends: 600475 [2023-12-21 13:45:57,785 INFO L226 Difference]: Without dead ends: 546184 [2023-12-21 13:45:57,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58374 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=17976, Invalid=140826, Unknown=0, NotChecked=0, Total=158802 [2023-12-21 13:45:57,936 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 6498 mSDsluCounter, 35438 mSDsCounter, 0 mSdLazyCounter, 18033 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 36848 SdHoareTripleChecker+Invalid, 18081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 18033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6498 Valid, 36848 Invalid, 18081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 18033 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-21 13:45:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546184 states. [2023-12-21 13:46:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546184 to 102074. [2023-12-21 13:46:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102074 states, 102073 states have (on average 1.284404298884132) internal successors, (131103), 102073 states have internal predecessors, (131103), 0 states have call successors, (0), 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 13:46:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102074 states to 102074 states and 131103 transitions. [2023-12-21 13:46:02,212 INFO L78 Accepts]: Start accepts. Automaton has 102074 states and 131103 transitions. Word has length 104 [2023-12-21 13:46:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:02,212 INFO L495 AbstractCegarLoop]: Abstraction has 102074 states and 131103 transitions. [2023-12-21 13:46:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.363636363636363) internal successors, (295), 55 states have internal predecessors, (295), 0 states have call successors, (0), 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 13:46:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 102074 states and 131103 transitions. [2023-12-21 13:46:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:46:02,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:02,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:46:02,223 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 13:46:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:02,419 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:46:02,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1239491431, now seen corresponding path program 1 times [2023-12-21 13:46:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:02,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243651304] [2023-12-21 13:46:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243651304] [2023-12-21 13:46:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243651304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:46:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613978493] [2023-12-21 13:46:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:02,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:02,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:46:02,836 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 13:46:02,838 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 13:46:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:02,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:46:02,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:46:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:03,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:46:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613978493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:46:04,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:46:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2023-12-21 13:46:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93342064] [2023-12-21 13:46:04,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:46:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 13:46:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 13:46:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:46:04,210 INFO L87 Difference]: Start difference. First operand 102074 states and 131103 transitions. Second operand has 20 states, 20 states have (on average 13.15) internal successors, (263), 20 states have internal predecessors, (263), 0 states have call successors, (0), 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 13:46:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:06,150 INFO L93 Difference]: Finished difference Result 266459 states and 337071 transitions. [2023-12-21 13:46:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 13:46:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.15) internal successors, (263), 20 states have internal predecessors, (263), 0 states have call successors, (0), 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 105 [2023-12-21 13:46:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:06,488 INFO L225 Difference]: With dead ends: 266459 [2023-12-21 13:46:06,488 INFO L226 Difference]: Without dead ends: 232584 [2023-12-21 13:46:06,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=533, Invalid=1629, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 13:46:06,561 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1122 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:06,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1478 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:46:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232584 states. [2023-12-21 13:46:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232584 to 109577. [2023-12-21 13:46:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109577 states, 109576 states have (on average 1.2835657443235744) internal successors, (140648), 109576 states have internal predecessors, (140648), 0 states have call successors, (0), 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 13:46:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109577 states to 109577 states and 140648 transitions. [2023-12-21 13:46:08,500 INFO L78 Accepts]: Start accepts. Automaton has 109577 states and 140648 transitions. Word has length 105 [2023-12-21 13:46:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:08,500 INFO L495 AbstractCegarLoop]: Abstraction has 109577 states and 140648 transitions. [2023-12-21 13:46:08,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.15) internal successors, (263), 20 states have internal predecessors, (263), 0 states have call successors, (0), 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 13:46:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 109577 states and 140648 transitions. [2023-12-21 13:46:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:46:08,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:08,505 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, 1, 1, 1] [2023-12-21 13:46:08,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 13:46:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:08,708 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:46:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -718872042, now seen corresponding path program 1 times [2023-12-21 13:46:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592909539] [2023-12-21 13:46:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:08,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592909539] [2023-12-21 13:46:08,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592909539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:46:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:46:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:46:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419671249] [2023-12-21 13:46:08,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:46:08,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:46:08,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:46:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:46:08,952 INFO L87 Difference]: Start difference. First operand 109577 states and 140648 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 13:46:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:09,652 INFO L93 Difference]: Finished difference Result 219061 states and 281196 transitions. [2023-12-21 13:46:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:46:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-21 13:46:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:09,773 INFO L225 Difference]: With dead ends: 219061 [2023-12-21 13:46:09,773 INFO L226 Difference]: Without dead ends: 109579 [2023-12-21 13:46:09,794 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 13:46:09,795 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 59 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:09,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 225 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:46:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109579 states. [2023-12-21 13:46:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109579 to 106649. [2023-12-21 13:46:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106649 states, 106648 states have (on average 1.2590390818393218) internal successors, (134274), 106648 states have internal predecessors, (134274), 0 states have call successors, (0), 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 13:46:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106649 states to 106649 states and 134274 transitions. [2023-12-21 13:46:11,071 INFO L78 Accepts]: Start accepts. Automaton has 106649 states and 134274 transitions. Word has length 105 [2023-12-21 13:46:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:11,071 INFO L495 AbstractCegarLoop]: Abstraction has 106649 states and 134274 transitions. [2023-12-21 13:46:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 13:46:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 106649 states and 134274 transitions. [2023-12-21 13:46:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:46:11,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:11,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:46:11,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:46:11,075 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:46:11,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 355070742, now seen corresponding path program 1 times [2023-12-21 13:46:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518676960] [2023-12-21 13:46:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:11,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:11,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518676960] [2023-12-21 13:46:11,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518676960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:46:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283507353] [2023-12-21 13:46:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:11,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:11,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:46:11,913 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 13:46:11,915 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 13:46:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:12,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:46:12,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:46:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:12,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:46:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283507353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:46:13,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:46:13,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 11] total 39 [2023-12-21 13:46:13,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790781369] [2023-12-21 13:46:13,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:46:13,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 13:46:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:13,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 13:46:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1376, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 13:46:13,156 INFO L87 Difference]: Start difference. First operand 106649 states and 134274 transitions. Second operand has 39 states, 39 states have (on average 7.17948717948718) internal successors, (280), 39 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 13:46:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:27,929 INFO L93 Difference]: Finished difference Result 411133 states and 511023 transitions. [2023-12-21 13:46:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-12-21 13:46:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.17948717948718) internal successors, (280), 39 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 105 [2023-12-21 13:46:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:28,388 INFO L225 Difference]: With dead ends: 411133 [2023-12-21 13:46:28,388 INFO L226 Difference]: Without dead ends: 345185 [2023-12-21 13:46:28,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19249 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=7323, Invalid=48137, Unknown=0, NotChecked=0, Total=55460 [2023-12-21 13:46:28,492 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 5843 mSDsluCounter, 16449 mSDsCounter, 0 mSdLazyCounter, 6858 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5843 SdHoareTripleChecker+Valid, 17056 SdHoareTripleChecker+Invalid, 6864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:28,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5843 Valid, 17056 Invalid, 6864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 6858 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 13:46:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345185 states. [2023-12-21 13:46:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345185 to 145389. [2023-12-21 13:46:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145389 states, 145388 states have (on average 1.2581299694610284) internal successors, (182917), 145388 states have internal predecessors, (182917), 0 states have call successors, (0), 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 13:46:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145389 states to 145389 states and 182917 transitions. [2023-12-21 13:46:31,202 INFO L78 Accepts]: Start accepts. Automaton has 145389 states and 182917 transitions. Word has length 105 [2023-12-21 13:46:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 145389 states and 182917 transitions. [2023-12-21 13:46:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.17948717948718) internal successors, (280), 39 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 13:46:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 145389 states and 182917 transitions. [2023-12-21 13:46:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:46:31,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:31,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:46:31,214 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 13:46:31,412 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,SelfDestructingSolverStorable32 [2023-12-21 13:46:31,413 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:46:31,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1899997530, now seen corresponding path program 1 times [2023-12-21 13:46:31,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:31,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641432936] [2023-12-21 13:46:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641432936] [2023-12-21 13:46:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641432936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:46:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344877216] [2023-12-21 13:46:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:31,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:31,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:46:31,785 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 13:46:31,787 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 13:46:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:32,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 13:46:32,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:46:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:33,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:46:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:34,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344877216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:46:34,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:46:34,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 46 [2023-12-21 13:46:34,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262246919] [2023-12-21 13:46:34,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:46:34,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 13:46:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 13:46:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 13:46:34,017 INFO L87 Difference]: Start difference. First operand 145389 states and 182917 transitions. Second operand has 46 states, 46 states have (on average 6.043478260869565) internal successors, (278), 46 states have internal predecessors, (278), 0 states have call successors, (0), 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 13:46:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:57,907 INFO L93 Difference]: Finished difference Result 413131 states and 513170 transitions. [2023-12-21 13:46:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2023-12-21 13:46:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.043478260869565) internal successors, (278), 46 states have internal predecessors, (278), 0 states have call successors, (0), 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 105 [2023-12-21 13:46:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:58,352 INFO L225 Difference]: With dead ends: 413131 [2023-12-21 13:46:58,353 INFO L226 Difference]: Without dead ends: 370149 [2023-12-21 13:46:58,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20549 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=8782, Invalid=50510, Unknown=0, NotChecked=0, Total=59292 [2023-12-21 13:46:58,424 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 7672 mSDsluCounter, 19173 mSDsCounter, 0 mSdLazyCounter, 6581 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7672 SdHoareTripleChecker+Valid, 19975 SdHoareTripleChecker+Invalid, 6604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7672 Valid, 19975 Invalid, 6604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6581 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 13:46:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370149 states. [2023-12-21 13:47:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370149 to 183029. [2023-12-21 13:47:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183029 states, 183028 states have (on average 1.2568896562274625) internal successors, (230046), 183028 states have internal predecessors, (230046), 0 states have call successors, (0), 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 13:47:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183029 states to 183029 states and 230046 transitions. [2023-12-21 13:47:01,200 INFO L78 Accepts]: Start accepts. Automaton has 183029 states and 230046 transitions. Word has length 105 [2023-12-21 13:47:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:01,201 INFO L495 AbstractCegarLoop]: Abstraction has 183029 states and 230046 transitions. [2023-12-21 13:47:01,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.043478260869565) internal successors, (278), 46 states have internal predecessors, (278), 0 states have call successors, (0), 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 13:47:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 183029 states and 230046 transitions. [2023-12-21 13:47:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:47:01,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:01,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:47:01,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 13:47:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:01,408 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:47:01,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -376994863, now seen corresponding path program 1 times [2023-12-21 13:47:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605357300] [2023-12-21 13:47:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:02,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605357300] [2023-12-21 13:47:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605357300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:47:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842739935] [2023-12-21 13:47:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:02,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:02,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:47:02,257 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 13:47:02,260 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 13:47:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:02,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:47:02,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:47:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:02,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:47:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842739935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:47:03,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:47:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 32 [2023-12-21 13:47:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265084204] [2023-12-21 13:47:03,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:47:03,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:47:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:47:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:47:03,357 INFO L87 Difference]: Start difference. First operand 183029 states and 230046 transitions. Second operand has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 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 13:47:14,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:47:14,271 INFO L93 Difference]: Finished difference Result 418210 states and 520975 transitions. [2023-12-21 13:47:14,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-12-21 13:47:14,271 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 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 105 [2023-12-21 13:47:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:47:14,758 INFO L225 Difference]: With dead ends: 418210 [2023-12-21 13:47:14,758 INFO L226 Difference]: Without dead ends: 351226 [2023-12-21 13:47:14,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13747 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=5081, Invalid=33531, Unknown=0, NotChecked=0, Total=38612 [2023-12-21 13:47:14,839 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 3675 mSDsluCounter, 13621 mSDsCounter, 0 mSdLazyCounter, 5607 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 14250 SdHoareTripleChecker+Invalid, 5618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:47:14,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 14250 Invalid, 5618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5607 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 13:47:15,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351226 states. [2023-12-21 13:47:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351226 to 217340. [2023-12-21 13:47:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217340 states, 217339 states have (on average 1.2534795871886777) internal successors, (272430), 217339 states have internal predecessors, (272430), 0 states have call successors, (0), 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 13:47:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217340 states to 217340 states and 272430 transitions. [2023-12-21 13:47:18,288 INFO L78 Accepts]: Start accepts. Automaton has 217340 states and 272430 transitions. Word has length 105 [2023-12-21 13:47:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:18,288 INFO L495 AbstractCegarLoop]: Abstraction has 217340 states and 272430 transitions. [2023-12-21 13:47:18,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 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 13:47:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 217340 states and 272430 transitions. [2023-12-21 13:47:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:47:18,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:18,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:47:18,305 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 13:47:18,500 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,SelfDestructingSolverStorable34 [2023-12-21 13:47:18,500 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:47:18,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1245565356, now seen corresponding path program 1 times [2023-12-21 13:47:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:18,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58953868] [2023-12-21 13:47:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58953868] [2023-12-21 13:47:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58953868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:47:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055745265] [2023-12-21 13:47:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:19,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:47:19,352 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 13:47:19,354 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 13:47:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:19,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:47:19,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:47:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:19,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:47:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055745265] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:47:20,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:47:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 32 [2023-12-21 13:47:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476702760] [2023-12-21 13:47:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:47:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:47:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:47:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:47:20,352 INFO L87 Difference]: Start difference. First operand 217340 states and 272430 transitions. Second operand has 32 states, 32 states have (on average 8.71875) internal successors, (279), 32 states have internal predecessors, (279), 0 states have call successors, (0), 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 13:47:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:47:22,055 INFO L93 Difference]: Finished difference Result 281756 states and 353196 transitions. [2023-12-21 13:47:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 13:47:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.71875) internal successors, (279), 32 states have internal predecessors, (279), 0 states have call successors, (0), 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 13:47:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:47:22,306 INFO L225 Difference]: With dead ends: 281756 [2023-12-21 13:47:22,307 INFO L226 Difference]: Without dead ends: 231951 [2023-12-21 13:47:22,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=493, Invalid=2057, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 13:47:22,327 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2405 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:47:22,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 3785 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:47:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231951 states. [2023-12-21 13:47:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231951 to 217115. [2023-12-21 13:47:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217115 states, 217114 states have (on average 1.251503818270586) internal successors, (271719), 217114 states have internal predecessors, (271719), 0 states have call successors, (0), 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 13:47:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217115 states to 217115 states and 271719 transitions. [2023-12-21 13:47:24,812 INFO L78 Accepts]: Start accepts. Automaton has 217115 states and 271719 transitions. Word has length 106 [2023-12-21 13:47:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:24,812 INFO L495 AbstractCegarLoop]: Abstraction has 217115 states and 271719 transitions. [2023-12-21 13:47:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.71875) internal successors, (279), 32 states have internal predecessors, (279), 0 states have call successors, (0), 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 13:47:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 217115 states and 271719 transitions. [2023-12-21 13:47:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:47:24,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:24,833 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, 1, 1, 1, 1] [2023-12-21 13:47:24,840 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 13:47:25,034 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,SelfDestructingSolverStorable35 [2023-12-21 13:47:25,034 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:47:25,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1989613479, now seen corresponding path program 1 times [2023-12-21 13:47:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289314507] [2023-12-21 13:47:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:47:25,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:25,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289314507] [2023-12-21 13:47:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289314507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:47:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698694163] [2023-12-21 13:47:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:25,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:25,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:47:25,186 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 13:47:25,213 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 13:47:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:25,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 13:47:25,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:47:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:47:25,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:47:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:47:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698694163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:47:26,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:47:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 15 [2023-12-21 13:47:26,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926443912] [2023-12-21 13:47:26,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:47:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:47:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:47:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:47:26,087 INFO L87 Difference]: Start difference. First operand 217115 states and 271719 transitions. Second operand has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 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 13:47:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:47:27,752 INFO L93 Difference]: Finished difference Result 605229 states and 762793 transitions. [2023-12-21 13:47:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:47:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 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 13:47:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:47:28,565 INFO L225 Difference]: With dead ends: 605229 [2023-12-21 13:47:28,565 INFO L226 Difference]: Without dead ends: 388244 [2023-12-21 13:47:28,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:47:28,671 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 359 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:47:28,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1352 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:47:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388244 states. [2023-12-21 13:47:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388244 to 370566. [2023-12-21 13:47:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370566 states, 370565 states have (on average 1.2529003008918813) internal successors, (464281), 370565 states have internal predecessors, (464281), 0 states have call successors, (0), 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 13:47:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370566 states to 370566 states and 464281 transitions. [2023-12-21 13:47:33,165 INFO L78 Accepts]: Start accepts. Automaton has 370566 states and 464281 transitions. Word has length 106 [2023-12-21 13:47:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:33,166 INFO L495 AbstractCegarLoop]: Abstraction has 370566 states and 464281 transitions. [2023-12-21 13:47:33,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 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 13:47:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 370566 states and 464281 transitions. [2023-12-21 13:47:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:47:33,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:33,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:47:33,175 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 13:47:33,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 13:47:33,371 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:47:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 237940821, now seen corresponding path program 1 times [2023-12-21 13:47:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:33,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168917222] [2023-12-21 13:47:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168917222] [2023-12-21 13:47:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168917222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:47:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70693410] [2023-12-21 13:47:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:34,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:47:34,032 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 13:47:34,032 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 13:47:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:34,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 13:47:34,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:47:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:35,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:47:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70693410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:47:37,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:47:37,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 51 [2023-12-21 13:47:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510804198] [2023-12-21 13:47:37,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:47:37,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 13:47:37,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 13:47:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 13:47:37,048 INFO L87 Difference]: Start difference. First operand 370566 states and 464281 transitions. Second operand has 51 states, 51 states have (on average 5.745098039215686) internal successors, (293), 51 states have internal predecessors, (293), 0 states have call successors, (0), 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 13:48:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:17,471 INFO L93 Difference]: Finished difference Result 1157572 states and 1430211 transitions. [2023-12-21 13:48:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-12-21 13:48:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.745098039215686) internal successors, (293), 51 states have internal predecessors, (293), 0 states have call successors, (0), 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 13:48:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:20,231 INFO L225 Difference]: With dead ends: 1157572 [2023-12-21 13:48:20,231 INFO L226 Difference]: Without dead ends: 1066080 [2023-12-21 13:48:20,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51635 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=14324, Invalid=119998, Unknown=0, NotChecked=0, Total=134322 [2023-12-21 13:48:20,534 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 4604 mSDsluCounter, 32234 mSDsCounter, 0 mSdLazyCounter, 13052 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 33355 SdHoareTripleChecker+Invalid, 13079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 13052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:20,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 33355 Invalid, 13079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 13052 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-21 13:48:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066080 states. [2023-12-21 13:48:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066080 to 407658. [2023-12-21 13:48:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407658 states, 407657 states have (on average 1.2532472151833527) internal successors, (510895), 407657 states have internal predecessors, (510895), 0 states have call successors, (0), 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 13:48:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407658 states to 407658 states and 510895 transitions. [2023-12-21 13:48:29,266 INFO L78 Accepts]: Start accepts. Automaton has 407658 states and 510895 transitions. Word has length 106 [2023-12-21 13:48:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:29,267 INFO L495 AbstractCegarLoop]: Abstraction has 407658 states and 510895 transitions. [2023-12-21 13:48:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.745098039215686) internal successors, (293), 51 states have internal predecessors, (293), 0 states have call successors, (0), 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 13:48:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 407658 states and 510895 transitions. [2023-12-21 13:48:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:48:29,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:29,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:29,275 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 13:48:29,471 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,SelfDestructingSolverStorable37 [2023-12-21 13:48:29,471 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-21 13:48:29,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -966054505, now seen corresponding path program 1 times [2023-12-21 13:48:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388914100] [2023-12-21 13:48:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:48:29,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:29,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388914100] [2023-12-21 13:48:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388914100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:29,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457630962] [2023-12-21 13:48:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:29,831 INFO L87 Difference]: Start difference. First operand 407658 states and 510895 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 13:48:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:31,788 INFO L93 Difference]: Finished difference Result 741671 states and 930481 transitions. [2023-12-21 13:48:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:31,788 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 106 [2023-12-21 13:48:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:32,287 INFO L225 Difference]: With dead ends: 741671 [2023-12-21 13:48:32,288 INFO L226 Difference]: Without dead ends: 334158 [2023-12-21 13:48:32,435 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 13:48:32,435 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 81 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:32,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 114 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334158 states.