/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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:41:11,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:41:11,934 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 13:41:11,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:41:11,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:41:11,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:41:11,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:41:11,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:41:11,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:41:11,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:41:11,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:41:11,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:41:11,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:41:11,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:41:11,976 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:41:11,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:41:11,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:41:11,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:41:11,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:41:11,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:41:11,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:41:11,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:41:11,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:41:11,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:41:11,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:41:11,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:41:11,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:41:11,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:41:11,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:41:11,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:41:11,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:41:11,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:41:11,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:41:11,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:41:11,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:41:11,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:41:11,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:41:11,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:41:11,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:41:12,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:41:12,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:41:12,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:41:12,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:41:12,154 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:41:12,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:41:13,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:41:13,434 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:41:13,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:41:13,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5528231d3/9c3f3bc4d79d428a8591ac211d880e60/FLAG97783f2d7 [2023-12-21 13:41:13,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5528231d3/9c3f3bc4d79d428a8591ac211d880e60 [2023-12-21 13:41:13,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:41:13,461 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:41:13,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:41:13,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:41:13,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:41:13,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@faee7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13, skipping insertion in model container [2023-12-21 13:41:13,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:41:13,699 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2023-12-21 13:41:13,712 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2023-12-21 13:41:13,717 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2023-12-21 13:41:13,720 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2023-12-21 13:41:13,726 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2023-12-21 13:41:13,729 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2023-12-21 13:41:13,733 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2023-12-21 13:41:13,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:41:13,791 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:41:13,824 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2023-12-21 13:41:13,835 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2023-12-21 13:41:13,840 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2023-12-21 13:41:13,847 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2023-12-21 13:41:13,859 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2023-12-21 13:41:13,861 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2023-12-21 13:41:13,863 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2023-12-21 13:41:13,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:41:13,893 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:41:13,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13 WrapperNode [2023-12-21 13:41:13,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:41:13,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:41:13,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:41:13,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:41:13,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,964 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1103 [2023-12-21 13:41:13,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:41:13,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:41:13,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:41:13,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:41:13,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:13,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,002 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 13:41:14,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:41:14,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:41:14,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:41:14,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:41:14,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (1/1) ... [2023-12-21 13:41:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:41:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:41:14,153 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 13:41:14,184 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 13:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:41:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:41:14,276 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:41:14,277 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:41:14,893 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:41:14,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:41:14,925 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:41:14,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:14 BoogieIcfgContainer [2023-12-21 13:41:14,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:41:14,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:41:14,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:41:14,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:41:14,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:41:13" (1/3) ... [2023-12-21 13:41:14,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ec93d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:14, skipping insertion in model container [2023-12-21 13:41:14,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:13" (2/3) ... [2023-12-21 13:41:14,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ec93d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:14, skipping insertion in model container [2023-12-21 13:41:14,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:14" (3/3) ... [2023-12-21 13:41:14,935 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-12-21 13:41:14,948 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:41:14,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-12-21 13:41:15,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:41:15,009 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;@295bf1b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:41:15,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-21 13:41:15,014 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 13:41:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 13:41:15,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:15,024 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 13:41:15,024 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 13:41:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1273195572, now seen corresponding path program 1 times [2023-12-21 13:41:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:15,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006589351] [2023-12-21 13:41:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:15,377 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 13:41:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006589351] [2023-12-21 13:41:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006589351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:15,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:15,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617901892] [2023-12-21 13:41:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:15,403 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 13:41:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:15,558 INFO L93 Difference]: Finished difference Result 334 states and 565 transitions. [2023-12-21 13:41:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:15,561 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 13:41:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:15,567 INFO L225 Difference]: With dead ends: 334 [2023-12-21 13:41:15,568 INFO L226 Difference]: Without dead ends: 183 [2023-12-21 13:41:15,571 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 13:41:15,575 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 13:41:15,576 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 13:41:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-21 13:41:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-21 13:41:15,608 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 13:41:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2023-12-21 13:41:15,610 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 46 [2023-12-21 13:41:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:15,611 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2023-12-21 13:41:15,611 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 13:41:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2023-12-21 13:41:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 13:41:15,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:15,613 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 13:41:15,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:41:15,613 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 13:41:15,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1862883361, now seen corresponding path program 1 times [2023-12-21 13:41:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017853314] [2023-12-21 13:41:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:15,755 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 13:41:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017853314] [2023-12-21 13:41:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017853314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:15,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:15,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:15,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370506881] [2023-12-21 13:41:15,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:15,758 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 13:41:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:15,910 INFO L93 Difference]: Finished difference Result 306 states and 385 transitions. [2023-12-21 13:41:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:15,913 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 13:41:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:15,914 INFO L225 Difference]: With dead ends: 306 [2023-12-21 13:41:15,914 INFO L226 Difference]: Without dead ends: 167 [2023-12-21 13:41:15,915 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 13:41:15,916 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 576 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:15,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 131 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-21 13:41:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-21 13:41:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 160 states have (on average 1.28125) internal successors, (205), 166 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2023-12-21 13:41:15,922 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 47 [2023-12-21 13:41:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:15,923 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2023-12-21 13:41:15,923 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 13:41:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2023-12-21 13:41:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:41:15,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:15,924 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 13:41:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:41:15,925 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 13:41:15,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1456528685, now seen corresponding path program 1 times [2023-12-21 13:41:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051564037] [2023-12-21 13:41:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:16,029 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 13:41:16,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:16,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051564037] [2023-12-21 13:41:16,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051564037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:16,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787109451] [2023-12-21 13:41:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:16,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:16,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:16,035 INFO L87 Difference]: Start difference. First operand 167 states and 205 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 13:41:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:16,158 INFO L93 Difference]: Finished difference Result 374 states and 476 transitions. [2023-12-21 13:41:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:16,159 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 13:41:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:16,164 INFO L225 Difference]: With dead ends: 374 [2023-12-21 13:41:16,168 INFO L226 Difference]: Without dead ends: 240 [2023-12-21 13:41:16,170 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 13:41:16,172 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 768 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:16,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 187 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-21 13:41:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 216. [2023-12-21 13:41:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3397129186602872) internal successors, (280), 215 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 13:41:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 280 transitions. [2023-12-21 13:41:16,193 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 280 transitions. Word has length 48 [2023-12-21 13:41:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:16,193 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 280 transitions. [2023-12-21 13:41:16,193 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 13:41:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 280 transitions. [2023-12-21 13:41:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:16,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:16,194 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 13:41:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:41:16,196 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 13:41:16,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1731915121, now seen corresponding path program 1 times [2023-12-21 13:41:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668061738] [2023-12-21 13:41:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:16,384 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 13:41:16,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:16,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668061738] [2023-12-21 13:41:16,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668061738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:16,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:16,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:41:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084741829] [2023-12-21 13:41:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:16,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:16,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:16,386 INFO L87 Difference]: Start difference. First operand 216 states and 280 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 13:41:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:16,755 INFO L93 Difference]: Finished difference Result 531 states and 727 transitions. [2023-12-21 13:41:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:41:16,755 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 13:41:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:16,758 INFO L225 Difference]: With dead ends: 531 [2023-12-21 13:41:16,758 INFO L226 Difference]: Without dead ends: 526 [2023-12-21 13:41:16,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:41:16,763 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 945 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:16,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 605 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-21 13:41:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 216. [2023-12-21 13:41:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3349282296650717) internal successors, (279), 215 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 13:41:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 279 transitions. [2023-12-21 13:41:16,781 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 279 transitions. Word has length 49 [2023-12-21 13:41:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 279 transitions. [2023-12-21 13:41:16,781 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 13:41:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 279 transitions. [2023-12-21 13:41:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:16,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:16,784 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 13:41:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:41:16,784 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 13:41:16,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash -650855073, now seen corresponding path program 1 times [2023-12-21 13:41:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038354159] [2023-12-21 13:41:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:16,980 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 13:41:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038354159] [2023-12-21 13:41:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038354159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:16,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:41:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914860720] [2023-12-21 13:41:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:16,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:16,984 INFO L87 Difference]: Start difference. First operand 216 states and 279 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 13:41:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:17,330 INFO L93 Difference]: Finished difference Result 535 states and 730 transitions. [2023-12-21 13:41:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:41:17,331 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 13:41:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:17,332 INFO L225 Difference]: With dead ends: 535 [2023-12-21 13:41:17,332 INFO L226 Difference]: Without dead ends: 434 [2023-12-21 13:41:17,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:41:17,333 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 977 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:17,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 591 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-21 13:41:17,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 216. [2023-12-21 13:41:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3301435406698565) internal successors, (278), 215 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 13:41:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 278 transitions. [2023-12-21 13:41:17,338 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 278 transitions. Word has length 49 [2023-12-21 13:41:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:17,338 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 278 transitions. [2023-12-21 13:41:17,338 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 13:41:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 278 transitions. [2023-12-21 13:41:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:17,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:17,339 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 13:41:17,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:41:17,339 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 13:41:17,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash 622927837, now seen corresponding path program 1 times [2023-12-21 13:41:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:17,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029189192] [2023-12-21 13:41:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:17,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:17,519 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 13:41:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029189192] [2023-12-21 13:41:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029189192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:17,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:41:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485201521] [2023-12-21 13:41:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:41:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:41:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:41:17,524 INFO L87 Difference]: Start difference. First operand 216 states and 278 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 13:41:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:17,704 INFO L93 Difference]: Finished difference Result 460 states and 609 transitions. [2023-12-21 13:41:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:41:17,705 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 13:41:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:17,706 INFO L225 Difference]: With dead ends: 460 [2023-12-21 13:41:17,706 INFO L226 Difference]: Without dead ends: 336 [2023-12-21 13:41:17,706 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 13:41:17,707 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 758 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:17,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 420 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-21 13:41:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 216. [2023-12-21 13:41:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.325358851674641) internal successors, (277), 215 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 277 transitions. [2023-12-21 13:41:17,712 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 277 transitions. Word has length 49 [2023-12-21 13:41:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:17,712 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 277 transitions. [2023-12-21 13:41:17,712 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 13:41:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 277 transitions. [2023-12-21 13:41:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:41:17,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:17,713 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 13:41:17,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:41:17,713 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 13:41:17,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 359581070, now seen corresponding path program 1 times [2023-12-21 13:41:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768601685] [2023-12-21 13:41:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:18,121 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 13:41:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768601685] [2023-12-21 13:41:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768601685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:18,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:18,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 13:41:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594531003] [2023-12-21 13:41:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:41:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:41:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 13:41:18,124 INFO L87 Difference]: Start difference. First operand 216 states and 277 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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 13:41:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:18,387 INFO L93 Difference]: Finished difference Result 604 states and 831 transitions. [2023-12-21 13:41:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:41:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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 13:41:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:18,388 INFO L225 Difference]: With dead ends: 604 [2023-12-21 13:41:18,388 INFO L226 Difference]: Without dead ends: 487 [2023-12-21 13:41:18,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:41:18,404 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1155 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:18,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 704 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-21 13:41:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 183. [2023-12-21 13:41:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.329608938547486) internal successors, (238), 182 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2023-12-21 13:41:18,410 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 51 [2023-12-21 13:41:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2023-12-21 13:41:18,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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 13:41:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2023-12-21 13:41:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:41:18,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:18,411 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 13:41:18,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:41:18,412 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 13:41:18,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash -83474213, now seen corresponding path program 1 times [2023-12-21 13:41:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714297403] [2023-12-21 13:41:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:18,824 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 13:41:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714297403] [2023-12-21 13:41:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714297403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:41:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11270668] [2023-12-21 13:41:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:41:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:18,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:41:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:18,826 INFO L87 Difference]: Start difference. First operand 183 states and 238 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 13:41:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:19,186 INFO L93 Difference]: Finished difference Result 497 states and 688 transitions. [2023-12-21 13:41:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:41:19,187 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 13:41:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:19,188 INFO L225 Difference]: With dead ends: 497 [2023-12-21 13:41:19,188 INFO L226 Difference]: Without dead ends: 481 [2023-12-21 13:41:19,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:41:19,189 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 662 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:19,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1303 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-21 13:41:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 167. [2023-12-21 13:41:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.3272727272727274) internal successors, (219), 166 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2023-12-21 13:41:19,193 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 51 [2023-12-21 13:41:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:19,193 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2023-12-21 13:41:19,194 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 13:41:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2023-12-21 13:41:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:41:19,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:19,194 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 13:41:19,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:41:19,194 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 13:41:19,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash -873153248, now seen corresponding path program 1 times [2023-12-21 13:41:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54283792] [2023-12-21 13:41:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:19,411 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 13:41:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54283792] [2023-12-21 13:41:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54283792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:19,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:19,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 13:41:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478296337] [2023-12-21 13:41:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:19,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:41:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:41:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 13:41:19,413 INFO L87 Difference]: Start difference. First operand 167 states and 219 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 13:41:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:19,671 INFO L93 Difference]: Finished difference Result 318 states and 431 transitions. [2023-12-21 13:41:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:41:19,671 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 13:41:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:19,672 INFO L225 Difference]: With dead ends: 318 [2023-12-21 13:41:19,672 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 13:41:19,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:41:19,674 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 495 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:19,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 352 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 13:41:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 167. [2023-12-21 13:41:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.3151515151515152) internal successors, (217), 166 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2023-12-21 13:41:19,677 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 52 [2023-12-21 13:41:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:19,677 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2023-12-21 13:41:19,677 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 13:41:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2023-12-21 13:41:19,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:41:19,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:19,678 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 13:41:19,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:41:19,678 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 13:41:19,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1645932369, now seen corresponding path program 1 times [2023-12-21 13:41:19,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:19,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291139183] [2023-12-21 13:41:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:19,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:20,280 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 13:41:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291139183] [2023-12-21 13:41:20,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291139183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 13:41:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442272514] [2023-12-21 13:41:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 13:41:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 13:41:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:41:20,282 INFO L87 Difference]: Start difference. First operand 167 states and 217 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 13:41:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:21,130 INFO L93 Difference]: Finished difference Result 633 states and 895 transitions. [2023-12-21 13:41:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:41:21,131 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 13:41:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:21,133 INFO L225 Difference]: With dead ends: 633 [2023-12-21 13:41:21,133 INFO L226 Difference]: Without dead ends: 627 [2023-12-21 13:41:21,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:41:21,134 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 775 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:21,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1883 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:41:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-12-21 13:41:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 173. [2023-12-21 13:41:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.3157894736842106) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2023-12-21 13:41:21,140 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 54 [2023-12-21 13:41:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:21,140 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2023-12-21 13:41:21,140 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 13:41:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2023-12-21 13:41:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:41:21,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:21,141 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 13:41:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:41:21,142 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 13:41:21,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1729762893, now seen corresponding path program 1 times [2023-12-21 13:41:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612253119] [2023-12-21 13:41:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:21,543 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 13:41:21,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612253119] [2023-12-21 13:41:21,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612253119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:21,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:21,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:41:21,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337772822] [2023-12-21 13:41:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:21,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:41:21,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:41:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:21,545 INFO L87 Difference]: Start difference. First operand 173 states and 225 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 13:41:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,201 INFO L93 Difference]: Finished difference Result 833 states and 1182 transitions. [2023-12-21 13:41:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:41:22,201 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 13:41:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,204 INFO L225 Difference]: With dead ends: 833 [2023-12-21 13:41:22,204 INFO L226 Difference]: Without dead ends: 827 [2023-12-21 13:41:22,204 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 13:41:22,205 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1081 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:22,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1749 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:41:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-21 13:41:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 161. [2023-12-21 13:41:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.3125) internal successors, (210), 160 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 210 transitions. [2023-12-21 13:41:22,210 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 210 transitions. Word has length 55 [2023-12-21 13:41:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,210 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 210 transitions. [2023-12-21 13:41:22,210 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 13:41:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 210 transitions. [2023-12-21 13:41:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:41:22,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,210 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 13:41:22,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:41:22,211 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 13:41:22,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1767402819, now seen corresponding path program 1 times [2023-12-21 13:41:22,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778981442] [2023-12-21 13:41:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,289 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 13:41:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778981442] [2023-12-21 13:41:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778981442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286847017] [2023-12-21 13:41:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:22,290 INFO L87 Difference]: Start difference. First operand 161 states and 210 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 13:41:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,348 INFO L93 Difference]: Finished difference Result 665 states and 966 transitions. [2023-12-21 13:41:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:41:22,349 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 13:41:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,351 INFO L225 Difference]: With dead ends: 665 [2023-12-21 13:41:22,351 INFO L226 Difference]: Without dead ends: 581 [2023-12-21 13:41:22,351 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 13:41:22,352 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 486 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 606 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 13:41:22,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 606 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-21 13:41:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 243. [2023-12-21 13:41:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.3677685950413223) internal successors, (331), 242 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 331 transitions. [2023-12-21 13:41:22,357 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 331 transitions. Word has length 72 [2023-12-21 13:41:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,358 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 331 transitions. [2023-12-21 13:41:22,358 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 13:41:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 331 transitions. [2023-12-21 13:41:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:41:22,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,361 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 13:41:22,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:41:22,362 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 13:41:22,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1330307651, now seen corresponding path program 1 times [2023-12-21 13:41:22,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570257527] [2023-12-21 13:41:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,431 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 13:41:22,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570257527] [2023-12-21 13:41:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570257527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935020049] [2023-12-21 13:41:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:22,433 INFO L87 Difference]: Start difference. First operand 243 states and 331 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 13:41:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,479 INFO L93 Difference]: Finished difference Result 825 states and 1194 transitions. [2023-12-21 13:41:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:22,480 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 13:41:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,482 INFO L225 Difference]: With dead ends: 825 [2023-12-21 13:41:22,483 INFO L226 Difference]: Without dead ends: 659 [2023-12-21 13:41:22,483 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 13:41:22,484 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 283 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 436 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-21 13:41:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 407. [2023-12-21 13:41:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.416256157635468) internal successors, (575), 406 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 575 transitions. [2023-12-21 13:41:22,496 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 575 transitions. Word has length 74 [2023-12-21 13:41:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,497 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 575 transitions. [2023-12-21 13:41:22,497 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 13:41:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 575 transitions. [2023-12-21 13:41:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:41:22,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,498 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 13:41:22,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:41:22,498 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 13:41:22,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 794928439, now seen corresponding path program 1 times [2023-12-21 13:41:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016255012] [2023-12-21 13:41:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,586 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 13:41:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016255012] [2023-12-21 13:41:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016255012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573805805] [2023-12-21 13:41:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:22,588 INFO L87 Difference]: Start difference. First operand 407 states and 575 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 13:41:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,632 INFO L93 Difference]: Finished difference Result 989 states and 1438 transitions. [2023-12-21 13:41:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:22,633 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 13:41:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,635 INFO L225 Difference]: With dead ends: 989 [2023-12-21 13:41:22,635 INFO L226 Difference]: Without dead ends: 823 [2023-12-21 13:41:22,636 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 13:41:22,637 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 294 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 433 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 13:41:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 433 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-21 13:41:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 653. [2023-12-21 13:41:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4417177914110428) internal successors, (940), 652 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 940 transitions. [2023-12-21 13:41:22,647 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 940 transitions. Word has length 74 [2023-12-21 13:41:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 940 transitions. [2023-12-21 13:41:22,648 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 13:41:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 940 transitions. [2023-12-21 13:41:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:41:22,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,649 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 13:41:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:41:22,649 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 13:41:22,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash 670344324, now seen corresponding path program 1 times [2023-12-21 13:41:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799890864] [2023-12-21 13:41:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,687 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 13:41:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799890864] [2023-12-21 13:41:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799890864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397648532] [2023-12-21 13:41:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:22,689 INFO L87 Difference]: Start difference. First operand 653 states and 940 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 13:41:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,707 INFO L93 Difference]: Finished difference Result 1231 states and 1797 transitions. [2023-12-21 13:41:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:22,708 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 13:41:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,710 INFO L225 Difference]: With dead ends: 1231 [2023-12-21 13:41:22,710 INFO L226 Difference]: Without dead ends: 655 [2023-12-21 13:41:22,711 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 13:41:22,712 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 51 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 200 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 13:41:22,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 200 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-12-21 13:41:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 653. [2023-12-21 13:41:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4294478527607362) internal successors, (932), 652 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 932 transitions. [2023-12-21 13:41:22,722 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 932 transitions. Word has length 74 [2023-12-21 13:41:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,722 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 932 transitions. [2023-12-21 13:41:22,722 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 13:41:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 932 transitions. [2023-12-21 13:41:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:41:22,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,723 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 13:41:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:41:22,724 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 13:41:22,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash -98948669, now seen corresponding path program 1 times [2023-12-21 13:41:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667517497] [2023-12-21 13:41:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,757 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 13:41:22,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667517497] [2023-12-21 13:41:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667517497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753036532] [2023-12-21 13:41:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:22,760 INFO L87 Difference]: Start difference. First operand 653 states and 932 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 13:41:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,778 INFO L93 Difference]: Finished difference Result 1715 states and 2478 transitions. [2023-12-21 13:41:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:22,779 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 13:41:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,782 INFO L225 Difference]: With dead ends: 1715 [2023-12-21 13:41:22,782 INFO L226 Difference]: Without dead ends: 1139 [2023-12-21 13:41:22,783 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 13:41:22,783 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 51 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 284 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 13:41:22,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 284 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-21 13:41:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2023-12-21 13:41:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 1.409330985915493) internal successors, (1601), 1136 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1601 transitions. [2023-12-21 13:41:22,803 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1601 transitions. Word has length 74 [2023-12-21 13:41:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,803 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1601 transitions. [2023-12-21 13:41:22,803 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 13:41:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1601 transitions. [2023-12-21 13:41:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:41:22,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,804 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 13:41:22,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:41:22,805 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 13:41:22,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2082611331, now seen corresponding path program 1 times [2023-12-21 13:41:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710913063] [2023-12-21 13:41:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:22,896 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 13:41:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710913063] [2023-12-21 13:41:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710913063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552612662] [2023-12-21 13:41:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:22,898 INFO L87 Difference]: Start difference. First operand 1137 states and 1601 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 13:41:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:22,947 INFO L93 Difference]: Finished difference Result 2051 states and 2913 transitions. [2023-12-21 13:41:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:22,947 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 13:41:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:22,951 INFO L225 Difference]: With dead ends: 2051 [2023-12-21 13:41:22,951 INFO L226 Difference]: Without dead ends: 1747 [2023-12-21 13:41:22,952 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 13:41:22,953 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 286 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 465 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 13:41:22,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 465 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2023-12-21 13:41:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1439. [2023-12-21 13:41:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.4137691237830319) internal successors, (2033), 1438 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2033 transitions. [2023-12-21 13:41:22,974 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2033 transitions. Word has length 74 [2023-12-21 13:41:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:22,975 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2033 transitions. [2023-12-21 13:41:22,975 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 13:41:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2033 transitions. [2023-12-21 13:41:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:41:22,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:22,976 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 13:41:22,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:41:22,976 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 13:41:22,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -753330043, now seen corresponding path program 1 times [2023-12-21 13:41:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879199872] [2023-12-21 13:41:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:23,067 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 13:41:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879199872] [2023-12-21 13:41:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879199872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:23,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:23,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506574440] [2023-12-21 13:41:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:23,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:23,069 INFO L87 Difference]: Start difference. First operand 1439 states and 2033 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 13:41:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:23,088 INFO L93 Difference]: Finished difference Result 3677 states and 5209 transitions. [2023-12-21 13:41:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:23,089 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 13:41:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:23,094 INFO L225 Difference]: With dead ends: 3677 [2023-12-21 13:41:23,094 INFO L226 Difference]: Without dead ends: 2315 [2023-12-21 13:41:23,097 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 13:41:23,098 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 60 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 266 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 13:41:23,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2023-12-21 13:41:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2169. [2023-12-21 13:41:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.3952952029520296) internal successors, (3025), 2168 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3025 transitions. [2023-12-21 13:41:23,128 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3025 transitions. Word has length 75 [2023-12-21 13:41:23,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:23,128 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3025 transitions. [2023-12-21 13:41:23,128 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 13:41:23,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3025 transitions. [2023-12-21 13:41:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:41:23,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:23,129 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 13:41:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:41:23,129 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 13:41:23,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:23,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1764053275, now seen corresponding path program 1 times [2023-12-21 13:41:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:23,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120964344] [2023-12-21 13:41:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:23,189 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 13:41:23,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120964344] [2023-12-21 13:41:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120964344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:23,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:23,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:23,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624309284] [2023-12-21 13:41:23,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:23,192 INFO L87 Difference]: Start difference. First operand 2169 states and 3025 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 13:41:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:23,219 INFO L93 Difference]: Finished difference Result 6137 states and 8529 transitions. [2023-12-21 13:41:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:23,219 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 13:41:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:23,229 INFO L225 Difference]: With dead ends: 6137 [2023-12-21 13:41:23,229 INFO L226 Difference]: Without dead ends: 4045 [2023-12-21 13:41:23,232 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 13:41:23,232 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 265 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 13:41:23,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2023-12-21 13:41:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 3827. [2023-12-21 13:41:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3826 states have (on average 1.3755880815473078) internal successors, (5263), 3826 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5263 transitions. [2023-12-21 13:41:23,299 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5263 transitions. Word has length 76 [2023-12-21 13:41:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:23,299 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5263 transitions. [2023-12-21 13:41:23,300 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 13:41:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5263 transitions. [2023-12-21 13:41:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:41:23,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:23,300 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 13:41:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:41:23,300 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 13:41:23,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1616355032, now seen corresponding path program 1 times [2023-12-21 13:41:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762392751] [2023-12-21 13:41:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:23,363 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 13:41:23,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:23,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762392751] [2023-12-21 13:41:23,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762392751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:23,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:23,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34872794] [2023-12-21 13:41:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:23,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:23,365 INFO L87 Difference]: Start difference. First operand 3827 states and 5263 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 13:41:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:23,419 INFO L93 Difference]: Finished difference Result 10895 states and 14865 transitions. [2023-12-21 13:41:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:23,420 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 13:41:23,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:23,439 INFO L225 Difference]: With dead ends: 10895 [2023-12-21 13:41:23,439 INFO L226 Difference]: Without dead ends: 7145 [2023-12-21 13:41:23,447 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 13:41:23,448 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 43 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 263 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 13:41:23,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 263 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2023-12-21 13:41:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 6711. [2023-12-21 13:41:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6711 states, 6710 states have (on average 1.346795827123696) internal successors, (9037), 6710 states have internal predecessors, (9037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6711 states to 6711 states and 9037 transitions. [2023-12-21 13:41:23,572 INFO L78 Accepts]: Start accepts. Automaton has 6711 states and 9037 transitions. Word has length 77 [2023-12-21 13:41:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 6711 states and 9037 transitions. [2023-12-21 13:41:23,572 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 13:41:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6711 states and 9037 transitions. [2023-12-21 13:41:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:41:23,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:23,573 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 13:41:23,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:41:23,573 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 13:41:23,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2121296140, now seen corresponding path program 1 times [2023-12-21 13:41:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238359919] [2023-12-21 13:41:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:23,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:23,787 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 13:41:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238359919] [2023-12-21 13:41:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238359919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:23,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:23,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:41:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448678752] [2023-12-21 13:41:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:23,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:41:23,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:41:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:41:23,790 INFO L87 Difference]: Start difference. First operand 6711 states and 9037 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 13:41:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:23,877 INFO L93 Difference]: Finished difference Result 10397 states and 13923 transitions. [2023-12-21 13:41:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:41:23,878 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 13:41:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:23,911 INFO L225 Difference]: With dead ends: 10397 [2023-12-21 13:41:23,912 INFO L226 Difference]: Without dead ends: 10395 [2023-12-21 13:41:23,917 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 13:41:23,918 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 204 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 630 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 13:41:23,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 630 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10395 states. [2023-12-21 13:41:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10395 to 6903. [2023-12-21 13:41:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6902 states have (on average 1.3255578093306288) internal successors, (9149), 6902 states have internal predecessors, (9149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 9149 transitions. [2023-12-21 13:41:24,071 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 9149 transitions. Word has length 78 [2023-12-21 13:41:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:24,072 INFO L495 AbstractCegarLoop]: Abstraction has 6903 states and 9149 transitions. [2023-12-21 13:41:24,072 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 13:41:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 9149 transitions. [2023-12-21 13:41:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:41:24,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:24,073 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 13:41:24,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:41:24,074 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 13:41:24,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 305590840, now seen corresponding path program 1 times [2023-12-21 13:41:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246802460] [2023-12-21 13:41:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:24,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:24,120 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 13:41:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246802460] [2023-12-21 13:41:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246802460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:24,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804127572] [2023-12-21 13:41:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:24,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:24,123 INFO L87 Difference]: Start difference. First operand 6903 states and 9149 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 13:41:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:24,195 INFO L93 Difference]: Finished difference Result 13995 states and 18571 transitions. [2023-12-21 13:41:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:24,195 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 13:41:24,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:24,207 INFO L225 Difference]: With dead ends: 13995 [2023-12-21 13:41:24,207 INFO L226 Difference]: Without dead ends: 7169 [2023-12-21 13:41:24,217 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 13:41:24,219 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 216 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 13:41:24,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 216 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2023-12-21 13:41:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7167. [2023-12-21 13:41:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7166 states have (on average 1.3051911805749372) internal successors, (9353), 7166 states have internal predecessors, (9353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 9353 transitions. [2023-12-21 13:41:24,353 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 9353 transitions. Word has length 78 [2023-12-21 13:41:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:24,353 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 9353 transitions. [2023-12-21 13:41:24,354 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 13:41:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 9353 transitions. [2023-12-21 13:41:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:41:24,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:24,357 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 13:41:24,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:41:24,357 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 13:41:24,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1123966569, now seen corresponding path program 1 times [2023-12-21 13:41:24,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:24,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122237176] [2023-12-21 13:41:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:24,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:24,583 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 13:41:24,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122237176] [2023-12-21 13:41:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122237176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:41:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700941830] [2023-12-21 13:41:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:24,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:24,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:24,584 INFO L87 Difference]: Start difference. First operand 7167 states and 9353 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 13:41:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:24,892 INFO L93 Difference]: Finished difference Result 21609 states and 28157 transitions. [2023-12-21 13:41:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:41:24,892 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 13:41:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:24,919 INFO L225 Difference]: With dead ends: 21609 [2023-12-21 13:41:24,920 INFO L226 Difference]: Without dead ends: 14507 [2023-12-21 13:41:24,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:41:24,932 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 328 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:24,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 380 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:24,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14507 states. [2023-12-21 13:41:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14507 to 7167. [2023-12-21 13:41:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7166 states have (on average 1.304912084845102) internal successors, (9351), 7166 states have internal predecessors, (9351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 9351 transitions. [2023-12-21 13:41:25,085 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 9351 transitions. Word has length 100 [2023-12-21 13:41:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:25,085 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 9351 transitions. [2023-12-21 13:41:25,085 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 13:41:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 9351 transitions. [2023-12-21 13:41:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:41:25,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:25,087 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 13:41:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:41:25,087 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 13:41:25,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash 446079846, now seen corresponding path program 1 times [2023-12-21 13:41:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529193915] [2023-12-21 13:41:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:25,464 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 13:41:25,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529193915] [2023-12-21 13:41:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529193915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:41:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349864602] [2023-12-21 13:41:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:41:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:41:25,467 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 13:41:25,472 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 13:41:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:25,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:41:25,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:41:26,255 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 13:41:26,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:41:27,816 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 13:41:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349864602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:41:27,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:41:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-12-21 13:41:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298735325] [2023-12-21 13:41:27,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:41:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:41:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:41:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:41:27,818 INFO L87 Difference]: Start difference. First operand 7167 states and 9351 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 13:41:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:59,379 INFO L93 Difference]: Finished difference Result 129968 states and 164215 transitions. [2023-12-21 13:41:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 492 states. [2023-12-21 13:41:59,380 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 13:41:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:59,708 INFO L225 Difference]: With dead ends: 129968 [2023-12-21 13:41:59,708 INFO L226 Difference]: Without dead ends: 122878 [2023-12-21 13:41:59,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 518 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117310 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=24901, Invalid=244979, Unknown=0, NotChecked=0, Total=269880 [2023-12-21 13:41:59,762 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5210 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 4867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:59,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 4335 Invalid, 4867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 13:41:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122878 states. [2023-12-21 13:42:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122878 to 30469. [2023-12-21 13:42:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30469 states, 30468 states have (on average 1.3035643954312721) internal successors, (39717), 30468 states have internal predecessors, (39717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30469 states to 30469 states and 39717 transitions. [2023-12-21 13:42:00,637 INFO L78 Accepts]: Start accepts. Automaton has 30469 states and 39717 transitions. Word has length 102 [2023-12-21 13:42:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:00,637 INFO L495 AbstractCegarLoop]: Abstraction has 30469 states and 39717 transitions. [2023-12-21 13:42:00,637 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 13:42:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30469 states and 39717 transitions. [2023-12-21 13:42:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:42:00,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:00,642 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 13:42:00,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:42:00,848 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 13:42:00,848 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 13:42:00,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -498912012, now seen corresponding path program 1 times [2023-12-21 13:42:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:00,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458162357] [2023-12-21 13:42:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:00,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:01,683 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 13:42:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458162357] [2023-12-21 13:42:01,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458162357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:42:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150330751] [2023-12-21 13:42:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:42:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:01,702 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 13:42:01,703 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 13:42:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:01,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:42:01,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:42:02,298 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 13:42:02,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:42:03,237 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 13:42:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150330751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:42:03,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:42:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 32 [2023-12-21 13:42:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104065122] [2023-12-21 13:42:03,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:42:03,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:42:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:42:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:42:03,239 INFO L87 Difference]: Start difference. First operand 30469 states and 39717 transitions. Second operand has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 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 13:42:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:17,328 INFO L93 Difference]: Finished difference Result 381956 states and 486338 transitions. [2023-12-21 13:42:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2023-12-21 13:42:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 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 13:42:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:18,382 INFO L225 Difference]: With dead ends: 381956 [2023-12-21 13:42:18,383 INFO L226 Difference]: Without dead ends: 351590 [2023-12-21 13:42:18,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55711 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=14032, Invalid=114490, Unknown=0, NotChecked=0, Total=128522 [2023-12-21 13:42:18,489 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 8504 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8504 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:18,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8504 Valid, 3331 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 4660 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:42:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351590 states. [2023-12-21 13:42:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351590 to 65577. [2023-12-21 13:42:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65577 states, 65576 states have (on average 1.2943302427717458) internal successors, (84877), 65576 states have internal predecessors, (84877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65577 states to 65577 states and 84877 transitions. [2023-12-21 13:42:21,060 INFO L78 Accepts]: Start accepts. Automaton has 65577 states and 84877 transitions. Word has length 103 [2023-12-21 13:42:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:21,060 INFO L495 AbstractCegarLoop]: Abstraction has 65577 states and 84877 transitions. [2023-12-21 13:42:21,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 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 13:42:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 65577 states and 84877 transitions. [2023-12-21 13:42:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:42:21,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:21,071 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 13:42:21,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 13:42:21,277 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 13:42:21,277 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 13:42:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1970319395, now seen corresponding path program 1 times [2023-12-21 13:42:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714404869] [2023-12-21 13:42:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:42:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714404869] [2023-12-21 13:42:21,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714404869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:21,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:42:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751195912] [2023-12-21 13:42:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:21,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:42:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:42:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:42:21,335 INFO L87 Difference]: Start difference. First operand 65577 states and 84877 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:21,886 INFO L93 Difference]: Finished difference Result 127039 states and 164058 transitions. [2023-12-21 13:42:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:42:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 13:42:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:22,015 INFO L225 Difference]: With dead ends: 127039 [2023-12-21 13:42:22,015 INFO L226 Difference]: Without dead ends: 90169 [2023-12-21 13:42:22,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:42:22,325 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 227 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:22,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 163 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:42:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90169 states. [2023-12-21 13:42:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90169 to 65235. [2023-12-21 13:42:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65235 states, 65234 states have (on average 1.2906306527271054) internal successors, (84193), 65234 states have internal predecessors, (84193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65235 states to 65235 states and 84193 transitions. [2023-12-21 13:42:23,460 INFO L78 Accepts]: Start accepts. Automaton has 65235 states and 84193 transitions. Word has length 104 [2023-12-21 13:42:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:23,460 INFO L495 AbstractCegarLoop]: Abstraction has 65235 states and 84193 transitions. [2023-12-21 13:42:23,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 65235 states and 84193 transitions. [2023-12-21 13:42:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:42:23,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:23,470 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 13:42:23,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:42:23,470 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 13:42:23,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1411152920, now seen corresponding path program 1 times [2023-12-21 13:42:23,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274731596] [2023-12-21 13:42:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:24,390 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 13:42:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274731596] [2023-12-21 13:42:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274731596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:42:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273428053] [2023-12-21 13:42:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:24,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:42:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:42:24,405 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 13:42:24,407 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 13:42:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:24,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 13:42:24,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:42:25,652 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 13:42:25,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:42:27,416 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 13:42:27,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273428053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:42:27,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:42:27,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 50 [2023-12-21 13:42:27,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567539316] [2023-12-21 13:42:27,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:42:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 13:42:27,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 13:42:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2297, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 13:42:27,420 INFO L87 Difference]: Start difference. First operand 65235 states and 84193 transitions. Second operand has 50 states, 50 states have (on average 5.82) internal successors, (291), 50 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:57,935 INFO L93 Difference]: Finished difference Result 616834 states and 784368 transitions. [2023-12-21 13:42:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2023-12-21 13:42:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.82) internal successors, (291), 50 states have internal predecessors, (291), 0 states have call successors, (0), 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 13:42:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:59,625 INFO L225 Difference]: With dead ends: 616834 [2023-12-21 13:42:59,625 INFO L226 Difference]: Without dead ends: 551730 [2023-12-21 13:42:59,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43207 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=11418, Invalid=103164, Unknown=0, NotChecked=0, Total=114582 [2023-12-21 13:42:59,772 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 6556 mSDsluCounter, 28698 mSDsCounter, 0 mSdLazyCounter, 12266 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6556 SdHoareTripleChecker+Valid, 29635 SdHoareTripleChecker+Invalid, 12284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:59,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6556 Valid, 29635 Invalid, 12284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 12266 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-21 13:43:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551730 states. [2023-12-21 13:43:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551730 to 179278. [2023-12-21 13:43:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179278 states, 179277 states have (on average 1.2942876107922376) internal successors, (232036), 179277 states have internal predecessors, (232036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179278 states to 179278 states and 232036 transitions. [2023-12-21 13:43:04,667 INFO L78 Accepts]: Start accepts. Automaton has 179278 states and 232036 transitions. Word has length 104 [2023-12-21 13:43:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:04,668 INFO L495 AbstractCegarLoop]: Abstraction has 179278 states and 232036 transitions. [2023-12-21 13:43:04,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.82) internal successors, (291), 50 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 179278 states and 232036 transitions. [2023-12-21 13:43:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:43:04,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:04,703 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 13:43:04,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:43:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:04,910 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 13:43:04,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1416550502, now seen corresponding path program 1 times [2023-12-21 13:43:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802264624] [2023-12-21 13:43:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:05,065 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 13:43:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802264624] [2023-12-21 13:43:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802264624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701688820] [2023-12-21 13:43:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:05,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:05,067 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 13:43:05,108 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 13:43:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:05,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:43:05,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:05,993 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 13:43:05,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:06,680 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 13:43:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701688820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:06,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:06,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 29 [2023-12-21 13:43:06,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287133859] [2023-12-21 13:43:06,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:06,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:43:06,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:43:06,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:43:06,682 INFO L87 Difference]: Start difference. First operand 179278 states and 232036 transitions. Second operand has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 29 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 13:43:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:16,444 INFO L93 Difference]: Finished difference Result 640762 states and 810036 transitions. [2023-12-21 13:43:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 13:43:16,444 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 29 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 13:43:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:17,256 INFO L225 Difference]: With dead ends: 640762 [2023-12-21 13:43:17,256 INFO L226 Difference]: Without dead ends: 535502 [2023-12-21 13:43:17,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19213 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9014, Invalid=40938, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 13:43:17,586 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 3774 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 4163 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 4506 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:17,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3774 Valid, 4506 Invalid, 4220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4163 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 13:43:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535502 states. [2023-12-21 13:43:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535502 to 179262. [2023-12-21 13:43:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179262 states, 179261 states have (on average 1.2907771350154245) internal successors, (231386), 179261 states have internal predecessors, (231386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179262 states to 179262 states and 231386 transitions. [2023-12-21 13:43:21,724 INFO L78 Accepts]: Start accepts. Automaton has 179262 states and 231386 transitions. Word has length 104 [2023-12-21 13:43:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:21,724 INFO L495 AbstractCegarLoop]: Abstraction has 179262 states and 231386 transitions. [2023-12-21 13:43:21,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 29 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 13:43:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 179262 states and 231386 transitions. [2023-12-21 13:43:21,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:43:21,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:21,734 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 13:43:21,748 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 13:43:21,939 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,SelfDestructingSolverStorable27 [2023-12-21 13:43:21,940 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 13:43:21,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash -813367625, now seen corresponding path program 1 times [2023-12-21 13:43:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557714546] [2023-12-21 13:43:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:22,960 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 13:43:22,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:22,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557714546] [2023-12-21 13:43:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557714546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261624144] [2023-12-21 13:43:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:22,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:22,962 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 13:43:22,964 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 13:43:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:23,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:43:23,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:23,539 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 13:43:23,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:24,128 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 13:43:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261624144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:24,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:24,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 33 [2023-12-21 13:43:24,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423482850] [2023-12-21 13:43:24,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:24,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 13:43:24,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 13:43:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 13:43:24,130 INFO L87 Difference]: Start difference. First operand 179262 states and 231386 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 13:43:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:34,301 INFO L93 Difference]: Finished difference Result 444554 states and 569337 transitions. [2023-12-21 13:43:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2023-12-21 13:43:34,302 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 13:43:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:34,963 INFO L225 Difference]: With dead ends: 444554 [2023-12-21 13:43:34,963 INFO L226 Difference]: Without dead ends: 414359 [2023-12-21 13:43:35,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14993 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=6585, Invalid=35235, Unknown=0, NotChecked=0, Total=41820 [2023-12-21 13:43:35,444 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 3036 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3036 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 4819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:35,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3036 Valid, 4992 Invalid, 4819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 13:43:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414359 states. [2023-12-21 13:43:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414359 to 179262. [2023-12-21 13:43:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179262 states, 179261 states have (on average 1.2907771350154245) internal successors, (231386), 179261 states have internal predecessors, (231386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179262 states to 179262 states and 231386 transitions. [2023-12-21 13:43:38,594 INFO L78 Accepts]: Start accepts. Automaton has 179262 states and 231386 transitions. Word has length 104 [2023-12-21 13:43:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:38,595 INFO L495 AbstractCegarLoop]: Abstraction has 179262 states and 231386 transitions. [2023-12-21 13:43:38,595 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 13:43:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 179262 states and 231386 transitions. [2023-12-21 13:43:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:43:38,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:38,616 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 13:43:38,622 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 13:43:38,821 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,SelfDestructingSolverStorable28 [2023-12-21 13:43:38,822 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 13:43:38,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1515603423, now seen corresponding path program 1 times [2023-12-21 13:43:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220339855] [2023-12-21 13:43:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:39,462 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 13:43:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220339855] [2023-12-21 13:43:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220339855] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:43:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152934519] [2023-12-21 13:43:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:39,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:43:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:43:39,478 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 13:43:39,521 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 13:43:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:39,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:43:39,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:43:40,059 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 13:43:40,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:43:40,586 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 13:43:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152934519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:43:40,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:43:40,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 29 [2023-12-21 13:43:40,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841919864] [2023-12-21 13:43:40,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:43:40,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:43:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:40,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:43:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:43:40,588 INFO L87 Difference]: Start difference. First operand 179262 states and 231386 transitions. Second operand has 29 states, 29 states have (on average 9.758620689655173) internal successors, (283), 29 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:07,717 INFO L93 Difference]: Finished difference Result 899151 states and 1138855 transitions. [2023-12-21 13:44:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2023-12-21 13:44:07,718 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.758620689655173) internal successors, (283), 29 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-21 13:44:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:09,319 INFO L225 Difference]: With dead ends: 899151 [2023-12-21 13:44:09,320 INFO L226 Difference]: Without dead ends: 762092 [2023-12-21 13:44:09,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65190 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=18517, Invalid=128555, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 13:44:09,440 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 8670 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 5641 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8670 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 5716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:09,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8670 Valid, 4492 Invalid, 5716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5641 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 13:44:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762092 states. [2023-12-21 13:44:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762092 to 271246. [2023-12-21 13:44:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271246 states, 271245 states have (on average 1.2818927537834799) internal successors, (347707), 271245 states have internal predecessors, (347707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271246 states to 271246 states and 347707 transitions. [2023-12-21 13:44:15,012 INFO L78 Accepts]: Start accepts. Automaton has 271246 states and 347707 transitions. Word has length 105 [2023-12-21 13:44:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:15,024 INFO L495 AbstractCegarLoop]: Abstraction has 271246 states and 347707 transitions. [2023-12-21 13:44:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.758620689655173) internal successors, (283), 29 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 271246 states and 347707 transitions. [2023-12-21 13:44:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:44:15,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:15,035 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 13:44:15,043 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 13:44:15,235 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 13:44:15,236 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 13:44:15,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1239491431, now seen corresponding path program 1 times [2023-12-21 13:44:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847237634] [2023-12-21 13:44:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:15,759 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 13:44:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847237634] [2023-12-21 13:44:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847237634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974661717] [2023-12-21 13:44:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:15,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:15,761 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 13:44:15,777 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 13:44:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:15,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:44:15,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:16,344 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 13:44:16,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:16,782 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 13:44:16,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974661717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:16,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:16,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2023-12-21 13:44:16,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657170378] [2023-12-21 13:44:16,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 13:44:16,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 13:44:16,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:44:16,784 INFO L87 Difference]: Start difference. First operand 271246 states and 347707 transitions. Second operand has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 21 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:19,453 INFO L93 Difference]: Finished difference Result 497900 states and 633929 transitions. [2023-12-21 13:44:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 13:44:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 21 states have internal predecessors, (264), 0 states have call successors, (0), 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 13:44:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:20,138 INFO L225 Difference]: With dead ends: 497900 [2023-12-21 13:44:20,138 INFO L226 Difference]: Without dead ends: 433544 [2023-12-21 13:44:20,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 13:44:20,263 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1142 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:20,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1766 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:44:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433544 states. [2023-12-21 13:44:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433544 to 271156. [2023-12-21 13:44:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271156 states, 271155 states have (on average 1.281388873522524) internal successors, (347455), 271155 states have internal predecessors, (347455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271156 states to 271156 states and 347455 transitions. [2023-12-21 13:44:24,706 INFO L78 Accepts]: Start accepts. Automaton has 271156 states and 347455 transitions. Word has length 105 [2023-12-21 13:44:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:24,708 INFO L495 AbstractCegarLoop]: Abstraction has 271156 states and 347455 transitions. [2023-12-21 13:44:24,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 21 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 271156 states and 347455 transitions. [2023-12-21 13:44:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:44:24,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:24,722 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 13:44:24,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:44:24,927 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 13:44:24,927 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 13:44:24,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:24,928 INFO L85 PathProgramCache]: Analyzing trace with hash 826054746, now seen corresponding path program 1 times [2023-12-21 13:44:24,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:24,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094367888] [2023-12-21 13:44:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:25,027 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 13:44:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094367888] [2023-12-21 13:44:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094367888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:25,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145701698] [2023-12-21 13:44:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:25,029 INFO L87 Difference]: Start difference. First operand 271156 states and 347455 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 13:44:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,448 INFO L93 Difference]: Finished difference Result 542199 states and 694789 transitions. [2023-12-21 13:44:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:26,449 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 13:44:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:27,302 INFO L225 Difference]: With dead ends: 542199 [2023-12-21 13:44:27,302 INFO L226 Difference]: Without dead ends: 271158 [2023-12-21 13:44:27,443 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 13:44:27,444 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 60 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 229 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 13:44:27,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271158 states. [2023-12-21 13:44:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271158 to 258593. [2023-12-21 13:44:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258593 states, 258592 states have (on average 1.2588981871055562) internal successors, (325541), 258592 states have internal predecessors, (325541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258593 states to 258593 states and 325541 transitions. [2023-12-21 13:44:30,848 INFO L78 Accepts]: Start accepts. Automaton has 258593 states and 325541 transitions. Word has length 105 [2023-12-21 13:44:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:30,848 INFO L495 AbstractCegarLoop]: Abstraction has 258593 states and 325541 transitions. [2023-12-21 13:44:30,848 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 13:44:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 258593 states and 325541 transitions. [2023-12-21 13:44:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:44:30,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:30,855 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 13:44:30,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:44:30,856 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 13:44:30,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1899997530, now seen corresponding path program 1 times [2023-12-21 13:44:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735736690] [2023-12-21 13:44:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:31,578 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 13:44:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735736690] [2023-12-21 13:44:31,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735736690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153955599] [2023-12-21 13:44:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:31,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:31,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:31,580 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 13:44:31,582 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 13:44:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:31,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 13:44:31,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:32,434 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 13:44:32,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:33,569 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 13:44:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153955599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:33,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:33,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 44 [2023-12-21 13:44:33,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796118656] [2023-12-21 13:44:33,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 13:44:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 13:44:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1742, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 13:44:33,571 INFO L87 Difference]: Start difference. First operand 258593 states and 325541 transitions. Second operand has 44 states, 44 states have (on average 6.295454545454546) internal successors, (277), 44 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:46:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:03,317 INFO L93 Difference]: Finished difference Result 1316501 states and 1627928 transitions. [2023-12-21 13:46:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2023-12-21 13:46:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.295454545454546) internal successors, (277), 44 states have internal predecessors, (277), 0 states have call successors, (0), 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 13:46:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:05,350 INFO L225 Difference]: With dead ends: 1316501 [2023-12-21 13:46:05,350 INFO L226 Difference]: Without dead ends: 1176955 [2023-12-21 13:46:05,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 1052 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511161 ImplicationChecksByTransitivity, 72.9s TimeCoverageRelationStatistics Valid=64848, Invalid=1045014, Unknown=0, NotChecked=0, Total=1109862 [2023-12-21 13:46:05,822 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 12583 mSDsluCounter, 50725 mSDsCounter, 0 mSdLazyCounter, 19022 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12583 SdHoareTripleChecker+Valid, 52771 SdHoareTripleChecker+Invalid, 19117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 19022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:05,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12583 Valid, 52771 Invalid, 19117 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [95 Valid, 19022 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-21 13:46:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176955 states. [2023-12-21 13:46:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176955 to 300477. [2023-12-21 13:46:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300477 states, 300476 states have (on average 1.258619656811193) internal successors, (378185), 300476 states have internal predecessors, (378185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:46:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300477 states to 300477 states and 378185 transitions. [2023-12-21 13:46:13,815 INFO L78 Accepts]: Start accepts. Automaton has 300477 states and 378185 transitions. Word has length 105 [2023-12-21 13:46:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:13,815 INFO L495 AbstractCegarLoop]: Abstraction has 300477 states and 378185 transitions. [2023-12-21 13:46:14,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.295454545454546) internal successors, (277), 44 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:46:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 300477 states and 378185 transitions. [2023-12-21 13:46:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:46:14,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:14,174 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 13:46:14,180 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 13:46:14,380 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 13:46:14,380 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 13:46:14,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash -44204056, now seen corresponding path program 1 times [2023-12-21 13:46:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439552233] [2023-12-21 13:46:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:14,471 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 13:46:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439552233] [2023-12-21 13:46:14,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439552233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:46:14,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:46:14,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:46:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376516518] [2023-12-21 13:46:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:46:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:46:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:46:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:46:14,472 INFO L87 Difference]: Start difference. First operand 300477 states and 378185 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 13:46:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:15,744 INFO L93 Difference]: Finished difference Result 528674 states and 666895 transitions. [2023-12-21 13:46:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:46:15,745 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 105 [2023-12-21 13:46:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:16,112 INFO L225 Difference]: With dead ends: 528674 [2023-12-21 13:46:16,112 INFO L226 Difference]: Without dead ends: 228312 [2023-12-21 13:46:16,539 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 13:46:16,540 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 82 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:16,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:46:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228312 states.