./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:04:55,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:04:55,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:04:55,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:04:55,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:04:55,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:04:55,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:04:55,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:04:55,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:04:55,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:04:55,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:04:55,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:04:55,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:04:55,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:04:55,216 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:04:55,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:04:55,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:04:55,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:04:55,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:04:55,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:04:55,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:04:55,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:04:55,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:04:55,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:04:55,219 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:04:55,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:04:55,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:04:55,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:04:55,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:04:55,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:04:55,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:04:55,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:04:55,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:04:55,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:04:55,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:04:55,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:04:55,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:04:55,223 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-20 13:04:55,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:04:55,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:04:55,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:04:55,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:04:55,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:04:55,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-11-20 13:04:56,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:04:57,045 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:04:57,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-11-20 13:04:57,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867708bc7/2298a96cee1947b0a0bdb44b8e9e4975/FLAGd15eca76d [2024-11-20 13:04:57,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867708bc7/2298a96cee1947b0a0bdb44b8e9e4975 [2024-11-20 13:04:57,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:04:57,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:04:57,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:04:57,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:04:57,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:04:57,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:04:57" (1/1) ... [2024-11-20 13:04:57,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e51d6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:57, skipping insertion in model container [2024-11-20 13:04:57,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:04:57" (1/1) ... [2024-11-20 13:04:57,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:04:57,805 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i[33519,33532] [2024-11-20 13:04:57,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:04:57,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:04:57,959 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i[33519,33532] [2024-11-20 13:04:58,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:04:58,047 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:04:58,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58 WrapperNode [2024-11-20 13:04:58,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:04:58,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:04:58,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:04:58,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:04:58,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,154 INFO L138 Inliner]: procedures = 176, calls = 376, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1715 [2024-11-20 13:04:58,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:04:58,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:04:58,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:04:58,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:04:58,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,274 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-20 13:04:58,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:04:58,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:04:58,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:04:58,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:04:58,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (1/1) ... [2024-11-20 13:04:58,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:04:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:04:58,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 13:04:58,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 13:04:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:04:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:04:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:04:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:04:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:04:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:04:58,633 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:04:58,635 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:05:00,015 INFO L? ?]: Removed 404 outVars from TransFormulas that were not future-live. [2024-11-20 13:05:00,016 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:05:00,032 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:05:00,032 INFO L316 CfgBuilder]: Removed 69 assume(true) statements. [2024-11-20 13:05:00,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:05:00 BoogieIcfgContainer [2024-11-20 13:05:00,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:05:00,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:05:00,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:05:00,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:05:00,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:04:57" (1/3) ... [2024-11-20 13:05:00,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b64984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:05:00, skipping insertion in model container [2024-11-20 13:05:00,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:58" (2/3) ... [2024-11-20 13:05:00,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b64984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:05:00, skipping insertion in model container [2024-11-20 13:05:00,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:05:00" (3/3) ... [2024-11-20 13:05:00,042 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-2.i [2024-11-20 13:05:00,056 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:05:00,056 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:05:00,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:05:00,126 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@501913ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:05:00,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:05:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 439 states, 430 states have (on average 1.613953488372093) internal successors, (694), 431 states have internal predecessors, (694), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:05:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 13:05:00,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:00,142 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:00,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:00,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash -639633962, now seen corresponding path program 1 times [2024-11-20 13:05:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646497091] [2024-11-20 13:05:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:05:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646497091] [2024-11-20 13:05:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646497091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:00,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:00,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:05:00,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988034778] [2024-11-20 13:05:00,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:00,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:05:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:00,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:05:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:00,436 INFO L87 Difference]: Start difference. First operand has 439 states, 430 states have (on average 1.613953488372093) internal successors, (694), 431 states have internal predecessors, (694), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:05:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:00,807 INFO L93 Difference]: Finished difference Result 1198 states and 1933 transitions. [2024-11-20 13:05:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:05:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-20 13:05:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:00,824 INFO L225 Difference]: With dead ends: 1198 [2024-11-20 13:05:00,825 INFO L226 Difference]: Without dead ends: 720 [2024-11-20 13:05:00,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:00,837 INFO L432 NwaCegarLoop]: 626 mSDtfsCounter, 467 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:00,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1799 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-20 13:05:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-11-20 13:05:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 709 states have (on average 1.4541607898448519) internal successors, (1031), 709 states have internal predecessors, (1031), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1049 transitions. [2024-11-20 13:05:00,922 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1049 transitions. Word has length 10 [2024-11-20 13:05:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:00,923 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1049 transitions. [2024-11-20 13:05:00,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:05:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1049 transitions. [2024-11-20 13:05:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:05:00,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:00,934 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:00,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:05:00,934 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:00,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 811678255, now seen corresponding path program 1 times [2024-11-20 13:05:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114538811] [2024-11-20 13:05:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:01,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 13:05:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:01,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-20 13:05:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:05:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:01,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114538811] [2024-11-20 13:05:01,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114538811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:01,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:01,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:05:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499768850] [2024-11-20 13:05:01,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:01,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:05:01,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:05:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:05:01,528 INFO L87 Difference]: Start difference. First operand 720 states and 1049 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:01,941 INFO L93 Difference]: Finished difference Result 1389 states and 2027 transitions. [2024-11-20 13:05:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:05:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:05:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:01,946 INFO L225 Difference]: With dead ends: 1389 [2024-11-20 13:05:01,947 INFO L226 Difference]: Without dead ends: 729 [2024-11-20 13:05:01,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:05:01,949 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 108 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:01,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1996 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:05:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-20 13:05:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 720. [2024-11-20 13:05:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 709 states have (on average 1.4344146685472496) internal successors, (1017), 709 states have internal predecessors, (1017), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1035 transitions. [2024-11-20 13:05:01,975 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1035 transitions. Word has length 171 [2024-11-20 13:05:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:01,975 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1035 transitions. [2024-11-20 13:05:01,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1035 transitions. [2024-11-20 13:05:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:05:01,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:01,981 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:01,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:05:01,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:01,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2074298589, now seen corresponding path program 1 times [2024-11-20 13:05:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191964656] [2024-11-20 13:05:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 13:05:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-20 13:05:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:05:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191964656] [2024-11-20 13:05:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191964656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:02,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:02,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:05:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140519612] [2024-11-20 13:05:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:02,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:05:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:05:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:02,243 INFO L87 Difference]: Start difference. First operand 720 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:02,630 INFO L93 Difference]: Finished difference Result 1379 states and 1994 transitions. [2024-11-20 13:05:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:05:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:05:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:02,634 INFO L225 Difference]: With dead ends: 1379 [2024-11-20 13:05:02,634 INFO L226 Difference]: Without dead ends: 735 [2024-11-20 13:05:02,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:02,636 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 4 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:02,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1567 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:05:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-20 13:05:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 732. [2024-11-20 13:05:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 721 states have (on average 1.4271844660194175) internal successors, (1029), 721 states have internal predecessors, (1029), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1047 transitions. [2024-11-20 13:05:02,654 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1047 transitions. Word has length 171 [2024-11-20 13:05:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:02,654 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1047 transitions. [2024-11-20 13:05:02,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1047 transitions. [2024-11-20 13:05:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:05:02,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:02,656 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:02,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:05:02,657 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:02,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1533869083, now seen corresponding path program 1 times [2024-11-20 13:05:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:02,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483288974] [2024-11-20 13:05:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 13:05:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-20 13:05:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:05:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483288974] [2024-11-20 13:05:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483288974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:02,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:02,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:05:02,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085839185] [2024-11-20 13:05:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:02,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:05:02,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:05:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:02,854 INFO L87 Difference]: Start difference. First operand 732 states and 1047 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:03,154 INFO L93 Difference]: Finished difference Result 1317 states and 1894 transitions. [2024-11-20 13:05:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:05:03,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:05:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:03,158 INFO L225 Difference]: With dead ends: 1317 [2024-11-20 13:05:03,159 INFO L226 Difference]: Without dead ends: 733 [2024-11-20 13:05:03,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:03,162 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 137 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:03,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1594 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-20 13:05:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 730. [2024-11-20 13:05:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 719 states have (on average 1.426981919332406) internal successors, (1026), 719 states have internal predecessors, (1026), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1044 transitions. [2024-11-20 13:05:03,189 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1044 transitions. Word has length 171 [2024-11-20 13:05:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:03,189 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1044 transitions. [2024-11-20 13:05:03,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1044 transitions. [2024-11-20 13:05:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-20 13:05:03,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:03,192 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:03,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:05:03,193 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:03,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2121725111, now seen corresponding path program 1 times [2024-11-20 13:05:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848447403] [2024-11-20 13:05:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 13:05:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:05:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-20 13:05:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:03,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:03,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848447403] [2024-11-20 13:05:03,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848447403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:03,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:03,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:05:03,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976330074] [2024-11-20 13:05:03,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:03,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:05:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:05:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:05:03,537 INFO L87 Difference]: Start difference. First operand 730 states and 1044 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:05:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:03,855 INFO L93 Difference]: Finished difference Result 1176 states and 1686 transitions. [2024-11-20 13:05:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:05:03,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2024-11-20 13:05:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:03,859 INFO L225 Difference]: With dead ends: 1176 [2024-11-20 13:05:03,860 INFO L226 Difference]: Without dead ends: 649 [2024-11-20 13:05:03,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:05:03,862 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 33 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:03,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1753 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-20 13:05:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2024-11-20 13:05:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 635 states have (on average 1.373228346456693) internal successors, (872), 635 states have internal predecessors, (872), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 890 transitions. [2024-11-20 13:05:03,881 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 890 transitions. Word has length 186 [2024-11-20 13:05:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:03,882 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 890 transitions. [2024-11-20 13:05:03,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:05:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 890 transitions. [2024-11-20 13:05:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-20 13:05:03,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:03,885 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:03,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:05:03,887 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:03,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -61607613, now seen corresponding path program 1 times [2024-11-20 13:05:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:03,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121176784] [2024-11-20 13:05:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 13:05:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:05:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-20 13:05:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 13:05:04,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121176784] [2024-11-20 13:05:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121176784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619958225] [2024-11-20 13:05:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:04,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:04,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:04,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:05:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:05,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 13:05:05,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:05,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-20 13:05:05,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:05:05,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 38 [2024-11-20 13:05:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:06,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:06,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619958225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:06,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:06,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-20 13:05:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802333845] [2024-11-20 13:05:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:06,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:05:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:05:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:05:06,155 INFO L87 Difference]: Start difference. First operand 646 states and 890 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:08,278 INFO L93 Difference]: Finished difference Result 1303 states and 1784 transitions. [2024-11-20 13:05:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:05:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 186 [2024-11-20 13:05:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:08,281 INFO L225 Difference]: With dead ends: 1303 [2024-11-20 13:05:08,282 INFO L226 Difference]: Without dead ends: 749 [2024-11-20 13:05:08,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-20 13:05:08,283 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 723 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:08,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 3071 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-20 13:05:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-20 13:05:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2024-11-20 13:05:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 667 states have (on average 1.3628185907046477) internal successors, (909), 667 states have internal predecessors, (909), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 927 transitions. [2024-11-20 13:05:08,300 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 927 transitions. Word has length 186 [2024-11-20 13:05:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:08,300 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 927 transitions. [2024-11-20 13:05:08,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:08,300 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 927 transitions. [2024-11-20 13:05:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-20 13:05:08,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:08,302 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:08,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:05:08,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 13:05:08,503 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:08,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1342261573, now seen corresponding path program 1 times [2024-11-20 13:05:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:08,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561361722] [2024-11-20 13:05:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 13:05:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:05:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-20 13:05:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:08,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561361722] [2024-11-20 13:05:08,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561361722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:08,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:05:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674777315] [2024-11-20 13:05:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:08,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:05:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:05:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:05:08,725 INFO L87 Difference]: Start difference. First operand 678 states and 927 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:09,059 INFO L93 Difference]: Finished difference Result 1187 states and 1626 transitions. [2024-11-20 13:05:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:05:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 186 [2024-11-20 13:05:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:09,062 INFO L225 Difference]: With dead ends: 1187 [2024-11-20 13:05:09,062 INFO L226 Difference]: Without dead ends: 541 [2024-11-20 13:05:09,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:05:09,063 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 12 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:09,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1450 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-20 13:05:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 538. [2024-11-20 13:05:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 527 states have (on average 1.3263757115749526) internal successors, (699), 527 states have internal predecessors, (699), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 717 transitions. [2024-11-20 13:05:09,076 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 717 transitions. Word has length 186 [2024-11-20 13:05:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:09,076 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 717 transitions. [2024-11-20 13:05:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 717 transitions. [2024-11-20 13:05:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-20 13:05:09,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:09,079 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:09,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:05:09,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:09,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1781361707, now seen corresponding path program 1 times [2024-11-20 13:05:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:09,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134459822] [2024-11-20 13:05:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:05:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:05:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:05:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:05:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 13:05:09,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:09,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134459822] [2024-11-20 13:05:09,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134459822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:09,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029574524] [2024-11-20 13:05:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:09,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:09,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:09,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:09,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:05:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:10,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 13:05:10,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:10,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029574524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:10,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:10,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-20 13:05:10,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361567505] [2024-11-20 13:05:10,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:10,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:05:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:05:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:10,309 INFO L87 Difference]: Start difference. First operand 538 states and 717 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:10,417 INFO L93 Difference]: Finished difference Result 1038 states and 1394 transitions. [2024-11-20 13:05:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:05:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 187 [2024-11-20 13:05:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:10,420 INFO L225 Difference]: With dead ends: 1038 [2024-11-20 13:05:10,420 INFO L226 Difference]: Without dead ends: 538 [2024-11-20 13:05:10,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:10,422 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 13 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:10,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1063 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:05:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-20 13:05:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-20 13:05:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 527 states have (on average 1.3225806451612903) internal successors, (697), 527 states have internal predecessors, (697), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 715 transitions. [2024-11-20 13:05:10,440 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 715 transitions. Word has length 187 [2024-11-20 13:05:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:10,440 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 715 transitions. [2024-11-20 13:05:10,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 715 transitions. [2024-11-20 13:05:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-20 13:05:10,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:10,443 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:10,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:05:10,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-20 13:05:10,644 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:10,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -775264098, now seen corresponding path program 1 times [2024-11-20 13:05:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:10,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108031230] [2024-11-20 13:05:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:11,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:05:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:11,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:05:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:11,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-20 13:05:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:11,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-20 13:05:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108031230] [2024-11-20 13:05:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108031230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:05:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356158023] [2024-11-20 13:05:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:11,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:05:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:05:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:11,061 INFO L87 Difference]: Start difference. First operand 538 states and 715 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:11,735 INFO L93 Difference]: Finished difference Result 1044 states and 1408 transitions. [2024-11-20 13:05:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:05:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 188 [2024-11-20 13:05:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:11,737 INFO L225 Difference]: With dead ends: 1044 [2024-11-20 13:05:11,737 INFO L226 Difference]: Without dead ends: 547 [2024-11-20 13:05:11,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:11,738 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 7 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:11,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1678 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:05:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-20 13:05:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 544. [2024-11-20 13:05:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 533 states have (on average 1.3189493433395871) internal successors, (703), 533 states have internal predecessors, (703), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 721 transitions. [2024-11-20 13:05:11,750 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 721 transitions. Word has length 188 [2024-11-20 13:05:11,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:11,750 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 721 transitions. [2024-11-20 13:05:11,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 721 transitions. [2024-11-20 13:05:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-20 13:05:11,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:11,752 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:11,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 13:05:11,753 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:11,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1714143676, now seen corresponding path program 1 times [2024-11-20 13:05:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250935563] [2024-11-20 13:05:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:12,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:05:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:12,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:05:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:12,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-20 13:05:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:12,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-20 13:05:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:05:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:12,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250935563] [2024-11-20 13:05:12,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250935563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:12,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:12,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 13:05:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843427856] [2024-11-20 13:05:12,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:12,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:05:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:05:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:05:12,112 INFO L87 Difference]: Start difference. First operand 544 states and 721 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:12,649 INFO L93 Difference]: Finished difference Result 1050 states and 1412 transitions. [2024-11-20 13:05:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:05:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2024-11-20 13:05:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:12,653 INFO L225 Difference]: With dead ends: 1050 [2024-11-20 13:05:12,653 INFO L226 Difference]: Without dead ends: 557 [2024-11-20 13:05:12,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:05:12,654 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 11 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:12,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2281 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:05:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-20 13:05:12,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 552. [2024-11-20 13:05:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 541 states have (on average 1.3179297597042514) internal successors, (713), 541 states have internal predecessors, (713), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-20 13:05:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 731 transitions. [2024-11-20 13:05:12,669 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 731 transitions. Word has length 189 [2024-11-20 13:05:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:12,669 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 731 transitions. [2024-11-20 13:05:12,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 731 transitions. [2024-11-20 13:05:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-20 13:05:12,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:12,670 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:12,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 13:05:12,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:12,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 120248104, now seen corresponding path program 1 times [2024-11-20 13:05:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577546807] [2024-11-20 13:05:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:05:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:05:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-20 13:05:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-20 13:05:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 13:05:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577546807] [2024-11-20 13:05:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577546807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555065030] [2024-11-20 13:05:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:13,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:13,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:13,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:13,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:05:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:13,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 13:05:13,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 13:05:13,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555065030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:13,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:13,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 13:05:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395991864] [2024-11-20 13:05:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:13,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:05:13,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:05:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:13,730 INFO L87 Difference]: Start difference. First operand 552 states and 731 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:05:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:13,798 INFO L93 Difference]: Finished difference Result 1074 states and 1437 transitions. [2024-11-20 13:05:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:05:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 189 [2024-11-20 13:05:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:13,801 INFO L225 Difference]: With dead ends: 1074 [2024-11-20 13:05:13,801 INFO L226 Difference]: Without dead ends: 617 [2024-11-20 13:05:13,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:05:13,802 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 367 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:13,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1582 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:05:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-20 13:05:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 555. [2024-11-20 13:05:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 543 states have (on average 1.3186003683241252) internal successors, (716), 544 states have internal predecessors, (716), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 737 transitions. [2024-11-20 13:05:13,818 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 737 transitions. Word has length 189 [2024-11-20 13:05:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:13,818 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 737 transitions. [2024-11-20 13:05:13,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:05:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 737 transitions. [2024-11-20 13:05:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-20 13:05:13,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:13,821 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:13,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:05:14,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:14,022 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:14,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash -986473756, now seen corresponding path program 1 times [2024-11-20 13:05:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999075709] [2024-11-20 13:05:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:21,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:05:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:21,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:05:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:21,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-20 13:05:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:21,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-20 13:05:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 13:05:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999075709] [2024-11-20 13:05:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999075709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912030366] [2024-11-20 13:05:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:21,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:21,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:05:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:22,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:05:22,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:22,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912030366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:22,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:22,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24] total 29 [2024-11-20 13:05:22,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598158934] [2024-11-20 13:05:22,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:22,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:05:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:05:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2024-11-20 13:05:22,510 INFO L87 Difference]: Start difference. First operand 555 states and 737 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:22,833 INFO L93 Difference]: Finished difference Result 1065 states and 1427 transitions. [2024-11-20 13:05:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:05:22,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-11-20 13:05:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:22,836 INFO L225 Difference]: With dead ends: 1065 [2024-11-20 13:05:22,837 INFO L226 Difference]: Without dead ends: 565 [2024-11-20 13:05:22,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2024-11-20 13:05:22,838 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 8 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:22,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2001 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-20 13:05:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 555. [2024-11-20 13:05:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 543 states have (on average 1.3186003683241252) internal successors, (716), 544 states have internal predecessors, (716), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 737 transitions. [2024-11-20 13:05:22,868 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 737 transitions. Word has length 193 [2024-11-20 13:05:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:22,868 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 737 transitions. [2024-11-20 13:05:22,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 737 transitions. [2024-11-20 13:05:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-20 13:05:22,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:22,870 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:22,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 13:05:23,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:23,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash -308084946, now seen corresponding path program 1 times [2024-11-20 13:05:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457222862] [2024-11-20 13:05:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:23,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:05:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:23,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 13:05:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:23,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-20 13:05:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:23,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-20 13:05:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457222862] [2024-11-20 13:05:23,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457222862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:23,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:23,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 13:05:23,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926762872] [2024-11-20 13:05:23,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:23,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:05:23,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:23,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:05:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:05:23,530 INFO L87 Difference]: Start difference. First operand 555 states and 737 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:24,114 INFO L93 Difference]: Finished difference Result 1070 states and 1431 transitions. [2024-11-20 13:05:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:05:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 194 [2024-11-20 13:05:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:24,117 INFO L225 Difference]: With dead ends: 1070 [2024-11-20 13:05:24,117 INFO L226 Difference]: Without dead ends: 575 [2024-11-20 13:05:24,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:05:24,118 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 19 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:24,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2998 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:05:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-20 13:05:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2024-11-20 13:05:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 557 states have (on average 1.3177737881508078) internal successors, (734), 558 states have internal predecessors, (734), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 755 transitions. [2024-11-20 13:05:24,131 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 755 transitions. Word has length 194 [2024-11-20 13:05:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:24,131 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 755 transitions. [2024-11-20 13:05:24,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 755 transitions. [2024-11-20 13:05:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-20 13:05:24,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:24,132 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:24,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 13:05:24,132 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:24,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1270633674, now seen corresponding path program 1 times [2024-11-20 13:05:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139591349] [2024-11-20 13:05:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:24,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:05:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:24,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 13:05:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:24,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-20 13:05:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:24,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-20 13:05:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 13:05:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139591349] [2024-11-20 13:05:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139591349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508404172] [2024-11-20 13:05:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:24,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:24,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:24,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:05:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:25,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 13:05:25,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:25,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:25,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508404172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:25,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:25,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-11-20 13:05:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454353373] [2024-11-20 13:05:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:25,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:05:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:05:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-20 13:05:25,366 INFO L87 Difference]: Start difference. First operand 569 states and 755 transitions. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:26,072 INFO L93 Difference]: Finished difference Result 1091 states and 1458 transitions. [2024-11-20 13:05:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:05:26,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 194 [2024-11-20 13:05:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:26,075 INFO L225 Difference]: With dead ends: 1091 [2024-11-20 13:05:26,075 INFO L226 Difference]: Without dead ends: 589 [2024-11-20 13:05:26,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-20 13:05:26,077 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 13 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:26,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2350 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 13:05:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-20 13:05:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 579. [2024-11-20 13:05:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 567 states have (on average 1.3156966490299824) internal successors, (746), 568 states have internal predecessors, (746), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 767 transitions. [2024-11-20 13:05:26,088 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 767 transitions. Word has length 194 [2024-11-20 13:05:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:26,088 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 767 transitions. [2024-11-20 13:05:26,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 767 transitions. [2024-11-20 13:05:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-20 13:05:26,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:26,090 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:26,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 13:05:26,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 13:05:26,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:26,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2021140524, now seen corresponding path program 1 times [2024-11-20 13:05:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:26,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214745646] [2024-11-20 13:05:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:26,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:05:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:26,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:05:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:26,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:26,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-20 13:05:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:26,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214745646] [2024-11-20 13:05:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214745646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 13:05:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605381202] [2024-11-20 13:05:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:05:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:05:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:05:26,766 INFO L87 Difference]: Start difference. First operand 579 states and 767 transitions. Second operand has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 10 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:27,420 INFO L93 Difference]: Finished difference Result 1109 states and 1482 transitions. [2024-11-20 13:05:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:05:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 10 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 195 [2024-11-20 13:05:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:27,422 INFO L225 Difference]: With dead ends: 1109 [2024-11-20 13:05:27,423 INFO L226 Difference]: Without dead ends: 597 [2024-11-20 13:05:27,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:05:27,425 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 22 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:27,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3322 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:05:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-20 13:05:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 585. [2024-11-20 13:05:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 573 states have (on average 1.3123909249563699) internal successors, (752), 574 states have internal predecessors, (752), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 773 transitions. [2024-11-20 13:05:27,443 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 773 transitions. Word has length 195 [2024-11-20 13:05:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:27,443 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 773 transitions. [2024-11-20 13:05:27,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 10 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 773 transitions. [2024-11-20 13:05:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-20 13:05:27,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:27,445 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:27,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 13:05:27,445 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:27,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -325503560, now seen corresponding path program 1 times [2024-11-20 13:05:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608255322] [2024-11-20 13:05:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:28,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:05:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:28,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:05:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:28,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:28,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-20 13:05:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 13:05:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608255322] [2024-11-20 13:05:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608255322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101838029] [2024-11-20 13:05:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:28,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:28,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:28,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:05:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:29,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 13:05:29,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:36,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101838029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-20 13:05:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688617198] [2024-11-20 13:05:36,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:36,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:05:36,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:36,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:05:36,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:05:36,654 INFO L87 Difference]: Start difference. First operand 585 states and 773 transitions. Second operand has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:37,814 INFO L93 Difference]: Finished difference Result 1100 states and 1464 transitions. [2024-11-20 13:05:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:05:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 195 [2024-11-20 13:05:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:37,817 INFO L225 Difference]: With dead ends: 1100 [2024-11-20 13:05:37,817 INFO L226 Difference]: Without dead ends: 585 [2024-11-20 13:05:37,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:05:37,818 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 7 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:37,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3298 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-20 13:05:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-20 13:05:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2024-11-20 13:05:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 569 states have (on average 1.311072056239016) internal successors, (746), 570 states have internal predecessors, (746), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 767 transitions. [2024-11-20 13:05:37,831 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 767 transitions. Word has length 195 [2024-11-20 13:05:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:37,832 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 767 transitions. [2024-11-20 13:05:37,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 767 transitions. [2024-11-20 13:05:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-20 13:05:37,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:37,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:37,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 13:05:38,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 13:05:38,035 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:38,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 211082808, now seen corresponding path program 1 times [2024-11-20 13:05:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:38,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955923172] [2024-11-20 13:05:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:38,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:05:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:38,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:05:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:38,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:38,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-20 13:05:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 13:05:38,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955923172] [2024-11-20 13:05:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955923172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109341191] [2024-11-20 13:05:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:38,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:38,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:38,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:05:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:39,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 13:05:39,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-20 13:05:39,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109341191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-20 13:05:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161455557] [2024-11-20 13:05:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:39,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:05:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:05:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:05:39,172 INFO L87 Difference]: Start difference. First operand 581 states and 767 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:39,356 INFO L93 Difference]: Finished difference Result 1099 states and 1464 transitions. [2024-11-20 13:05:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:05:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 195 [2024-11-20 13:05:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:39,359 INFO L225 Difference]: With dead ends: 1099 [2024-11-20 13:05:39,359 INFO L226 Difference]: Without dead ends: 591 [2024-11-20 13:05:39,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:05:39,360 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 31 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:39,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2012 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:05:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-20 13:05:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 585. [2024-11-20 13:05:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 573 states have (on average 1.3089005235602094) internal successors, (750), 574 states have internal predecessors, (750), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-20 13:05:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 771 transitions. [2024-11-20 13:05:39,371 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 771 transitions. Word has length 195 [2024-11-20 13:05:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:39,371 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 771 transitions. [2024-11-20 13:05:39,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:05:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 771 transitions. [2024-11-20 13:05:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-20 13:05:39,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:39,372 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:05:39,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 13:05:39,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:39,573 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:39,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1253071681, now seen corresponding path program 1 times [2024-11-20 13:05:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591638460] [2024-11-20 13:05:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:40,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:05:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:40,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:05:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:40,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-20 13:05:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:40,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-20 13:05:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 13:05:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591638460] [2024-11-20 13:05:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591638460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:40,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648330564] [2024-11-20 13:05:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:40,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:40,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:40,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:05:40,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 13:05:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:41,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-20 13:05:41,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:41,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 13:05:41,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-20 13:05:41,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2024-11-20 13:05:41,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2024-11-20 13:05:41,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-11-20 13:05:41,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:05:41,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 13:05:41,460 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-20 13:05:41,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-20 13:05:41,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-20 13:05:41,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-20 13:05:41,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 13:05:41,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 13:05:41,668 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-20 13:05:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2024-11-20 13:05:41,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2024-11-20 13:05:41,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11