./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 16:26:02,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:26:02,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:26:02,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:26:02,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:26:02,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:26:02,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:26:02,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:26:02,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:26:02,724 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:26:02,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:26:02,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:26:02,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:26:02,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:26:02,726 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:26:02,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:26:02,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:26:02,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:26:02,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:26:02,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:26:02,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:26:02,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:26:02,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:26:02,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:26:02,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:26:02,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:26:02,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:26:02,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:26:02,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:26:02,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:26:02,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:26:02,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:26:02,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:26:02,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:26:02,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:26:02,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:26:02,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:26:02,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:26:02,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:26:02,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:26:02,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:26:02,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:26:02,738 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-10-11 16:26:02,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:26:02,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:26:02,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:26:02,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:26:02,958 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:26:02,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-10-11 16:26:04,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:26:04,541 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:26:04,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-10-11 16:26:04,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07f1d21c8/808c36fb2f7848f5b6245a72cec5c716/FLAGa41fd422d [2024-10-11 16:26:04,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07f1d21c8/808c36fb2f7848f5b6245a72cec5c716 [2024-10-11 16:26:04,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:26:04,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:26:04,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:26:04,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:26:04,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:26:04,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:26:04" (1/1) ... [2024-10-11 16:26:04,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c37ea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:04, skipping insertion in model container [2024-10-11 16:26:04,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:26:04" (1/1) ... [2024-10-11 16:26:04,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:26:05,251 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i[33519,33532] [2024-10-11 16:26:05,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:26:05,404 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:26:05,431 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i[33519,33532] [2024-10-11 16:26:05,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:26:05,536 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:26:05,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05 WrapperNode [2024-10-11 16:26:05,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:26:05,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:26:05,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:26:05,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:26:05,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,655 INFO L138 Inliner]: procedures = 176, calls = 376, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1715 [2024-10-11 16:26:05,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:26:05,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:26:05,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:26:05,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:26:05,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,773 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]. [2024-10-11 16:26:05,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:26:05,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:26:05,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:26:05,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:26:05,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (1/1) ... [2024-10-11 16:26:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:26:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:05,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:26:05,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:26:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:26:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:26:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:26:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:26:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:26:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:26:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:26:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:26:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:26:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:26:06,118 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:26:06,120 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:26:07,397 INFO L? ?]: Removed 404 outVars from TransFormulas that were not future-live. [2024-10-11 16:26:07,398 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:26:07,425 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:26:07,425 INFO L314 CfgBuilder]: Removed 69 assume(true) statements. [2024-10-11 16:26:07,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:26:07 BoogieIcfgContainer [2024-10-11 16:26:07,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:26:07,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:26:07,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:26:07,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:26:07,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:26:04" (1/3) ... [2024-10-11 16:26:07,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c352d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:26:07, skipping insertion in model container [2024-10-11 16:26:07,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:26:05" (2/3) ... [2024-10-11 16:26:07,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c352d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:26:07, skipping insertion in model container [2024-10-11 16:26:07,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:26:07" (3/3) ... [2024-10-11 16:26:07,432 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-2.i [2024-10-11 16:26:07,445 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:26:07,445 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 16:26:07,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:26:07,500 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;@599620a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:26:07,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 16:26:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 425 states have (on average 1.6211764705882352) internal successors, (689), 426 states have internal predecessors, (689), 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) [2024-10-11 16:26:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 16:26:07,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:07,536 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:26:07,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:07,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1617784000, now seen corresponding path program 1 times [2024-10-11 16:26:07,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:07,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580879720] [2024-10-11 16:26:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:26:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580879720] [2024-10-11 16:26:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580879720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:26:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542874603] [2024-10-11 16:26:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:07,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:26:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:26:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:26:07,779 INFO L87 Difference]: Start difference. First operand has 434 states, 425 states have (on average 1.6211764705882352) internal successors, (689), 426 states have internal predecessors, (689), 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 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:26:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:08,150 INFO L93 Difference]: Finished difference Result 1189 states and 1924 transitions. [2024-10-11 16:26:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:26:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-10-11 16:26:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:08,163 INFO L225 Difference]: With dead ends: 1189 [2024-10-11 16:26:08,163 INFO L226 Difference]: Without dead ends: 717 [2024-10-11 16:26:08,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:26:08,171 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 467 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:08,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1776 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:26:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-10-11 16:26:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2024-10-11 16:26:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 706 states have (on average 1.4560906515580736) internal successors, (1028), 706 states have internal predecessors, (1028), 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) [2024-10-11 16:26:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1046 transitions. [2024-10-11 16:26:08,260 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1046 transitions. Word has length 9 [2024-10-11 16:26:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:08,261 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1046 transitions. [2024-10-11 16:26:08,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:26:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1046 transitions. [2024-10-11 16:26:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 16:26:08,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:08,268 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:08,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:26:08,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:08,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 189676693, now seen corresponding path program 1 times [2024-10-11 16:26:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:08,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978257] [2024-10-11 16:26:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:08,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-11 16:26:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:08,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-11 16:26:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:26:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978257] [2024-10-11 16:26:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:08,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:26:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992876552] [2024-10-11 16:26:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:08,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 16:26:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 16:26:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:26:08,769 INFO L87 Difference]: Start difference. First operand 717 states and 1046 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-10-11 16:26:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:09,173 INFO L93 Difference]: Finished difference Result 1383 states and 2021 transitions. [2024-10-11 16:26:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:26:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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 168 [2024-10-11 16:26:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:09,179 INFO L225 Difference]: With dead ends: 1383 [2024-10-11 16:26:09,179 INFO L226 Difference]: Without dead ends: 725 [2024-10-11 16:26:09,181 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 [2024-10-11 16:26:09,184 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 107 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:09,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1975 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:26:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-10-11 16:26:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 717. [2024-10-11 16:26:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 706 states have (on average 1.4362606232294617) internal successors, (1014), 706 states have internal predecessors, (1014), 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) [2024-10-11 16:26:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1032 transitions. [2024-10-11 16:26:09,240 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1032 transitions. Word has length 168 [2024-10-11 16:26:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:09,241 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1032 transitions. [2024-10-11 16:26:09,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-10-11 16:26:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1032 transitions. [2024-10-11 16:26:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 16:26:09,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:09,249 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:09,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:26:09,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:09,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1641257335, now seen corresponding path program 1 times [2024-10-11 16:26:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780366934] [2024-10-11 16:26:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:09,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-11 16:26:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:09,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-11 16:26:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:26:09,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:09,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780366934] [2024-10-11 16:26:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780366934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:09,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:26:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044584261] [2024-10-11 16:26:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:09,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:26:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:26:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:26:09,532 INFO L87 Difference]: Start difference. First operand 717 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-11 16:26:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:09,805 INFO L93 Difference]: Finished difference Result 1373 states and 1988 transitions. [2024-10-11 16:26:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:26:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 168 [2024-10-11 16:26:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:09,811 INFO L225 Difference]: With dead ends: 1373 [2024-10-11 16:26:09,812 INFO L226 Difference]: Without dead ends: 731 [2024-10-11 16:26:09,813 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 [2024-10-11 16:26:09,814 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 3 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:09,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1551 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 16:26:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-11 16:26:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2024-10-11 16:26:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.4289693593314763) internal successors, (1026), 718 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) [2024-10-11 16:26:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1044 transitions. [2024-10-11 16:26:09,851 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1044 transitions. Word has length 168 [2024-10-11 16:26:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:09,852 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1044 transitions. [2024-10-11 16:26:09,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-11 16:26:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1044 transitions. [2024-10-11 16:26:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 16:26:09,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:09,856 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:09,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:26:09,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:09,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2051867701, now seen corresponding path program 1 times [2024-10-11 16:26:09,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:09,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160950090] [2024-10-11 16:26:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-11 16:26:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-11 16:26:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:26:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160950090] [2024-10-11 16:26:10,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160950090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:10,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:10,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:26:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080490178] [2024-10-11 16:26:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:10,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:26:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:26:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:26:10,031 INFO L87 Difference]: Start difference. First operand 729 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-11 16:26:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:10,288 INFO L93 Difference]: Finished difference Result 1311 states and 1888 transitions. [2024-10-11 16:26:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:26:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 168 [2024-10-11 16:26:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:10,292 INFO L225 Difference]: With dead ends: 1311 [2024-10-11 16:26:10,292 INFO L226 Difference]: Without dead ends: 729 [2024-10-11 16:26:10,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:26:10,296 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 136 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:10,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1578 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 16:26:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-10-11 16:26:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2024-10-11 16:26:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4287709497206704) internal successors, (1023), 716 states have internal predecessors, (1023), 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) [2024-10-11 16:26:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1041 transitions. [2024-10-11 16:26:10,317 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1041 transitions. Word has length 168 [2024-10-11 16:26:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:10,318 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1041 transitions. [2024-10-11 16:26:10,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-11 16:26:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1041 transitions. [2024-10-11 16:26:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-11 16:26:10,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:10,321 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:10,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:26:10,321 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:10,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash 72781633, now seen corresponding path program 1 times [2024-10-11 16:26:10,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:10,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963051041] [2024-10-11 16:26:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:26:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:26:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-11 16:26:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-11 16:26:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:10,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963051041] [2024-10-11 16:26:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963051041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:26:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547997738] [2024-10-11 16:26:10,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:10,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 16:26:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 16:26:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:26:10,618 INFO L87 Difference]: Start difference. First operand 727 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-11 16:26:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:10,886 INFO L93 Difference]: Finished difference Result 1170 states and 1680 transitions. [2024-10-11 16:26:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:26:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 181 [2024-10-11 16:26:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:10,889 INFO L225 Difference]: With dead ends: 1170 [2024-10-11 16:26:10,889 INFO L226 Difference]: Without dead ends: 645 [2024-10-11 16:26:10,890 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 [2024-10-11 16:26:10,891 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 32 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:10,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1732 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 16:26:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-11 16:26:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 643. [2024-10-11 16:26:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 632 states have (on average 1.375) internal successors, (869), 632 states have internal predecessors, (869), 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) [2024-10-11 16:26:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2024-10-11 16:26:10,903 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 181 [2024-10-11 16:26:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:10,904 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2024-10-11 16:26:10,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-11 16:26:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2024-10-11 16:26:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-11 16:26:10,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:10,905 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:10,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:26:10,906 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:10,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash -903790899, now seen corresponding path program 1 times [2024-10-11 16:26:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:10,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965183397] [2024-10-11 16:26:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:10,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:11,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:26:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:11,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:26:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:11,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-11 16:26:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:11,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-11 16:26:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 16:26:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965183397] [2024-10-11 16:26:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965183397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530763788] [2024-10-11 16:26:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:11,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:11,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:11,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:26:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:12,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 16:26:12,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:12,130 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 [2024-10-11 16:26:16,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:26:16,945 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 [2024-10-11 16:26:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:17,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530763788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:17,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-10-11 16:26:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712149367] [2024-10-11 16:26:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:17,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:26:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:26:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2024-10-11 16:26:17,219 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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) [2024-10-11 16:26:21,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:26:24,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:26:26,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 16:26:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:27,033 INFO L93 Difference]: Finished difference Result 1298 states and 1779 transitions. [2024-10-11 16:26:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:26:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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 181 [2024-10-11 16:26:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:27,037 INFO L225 Difference]: With dead ends: 1298 [2024-10-11 16:26:27,037 INFO L226 Difference]: Without dead ends: 746 [2024-10-11 16:26:27,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=92, Invalid=369, Unknown=1, NotChecked=0, Total=462 [2024-10-11 16:26:27,040 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 723 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:27,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 2799 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1132 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2024-10-11 16:26:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-10-11 16:26:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 675. [2024-10-11 16:26:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 664 states have (on average 1.3644578313253013) internal successors, (906), 664 states have internal predecessors, (906), 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) [2024-10-11 16:26:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 924 transitions. [2024-10-11 16:26:27,074 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 924 transitions. Word has length 181 [2024-10-11 16:26:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:27,076 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 924 transitions. [2024-10-11 16:26:27,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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) [2024-10-11 16:26:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 924 transitions. [2024-10-11 16:26:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-11 16:26:27,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:27,078 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:27,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 16:26:27,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:27,279 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:27,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash -558962737, now seen corresponding path program 1 times [2024-10-11 16:26:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872758915] [2024-10-11 16:26:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:27,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:26:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:27,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:26:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:27,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-11 16:26:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:27,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-11 16:26:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872758915] [2024-10-11 16:26:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872758915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:27,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:27,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:26:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189436935] [2024-10-11 16:26:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:27,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 16:26:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 16:26:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:26:27,480 INFO L87 Difference]: Start difference. First operand 675 states and 924 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-11 16:26:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:27,794 INFO L93 Difference]: Finished difference Result 1181 states and 1620 transitions. [2024-10-11 16:26:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:26:27,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 181 [2024-10-11 16:26:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:27,798 INFO L225 Difference]: With dead ends: 1181 [2024-10-11 16:26:27,798 INFO L226 Difference]: Without dead ends: 537 [2024-10-11 16:26:27,798 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 [2024-10-11 16:26:27,799 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 11 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:27,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1429 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:26:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-10-11 16:26:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 535. [2024-10-11 16:26:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 524 states have (on average 1.3282442748091603) internal successors, (696), 524 states have internal predecessors, (696), 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) [2024-10-11 16:26:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 714 transitions. [2024-10-11 16:26:27,814 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 714 transitions. Word has length 181 [2024-10-11 16:26:27,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:27,814 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 714 transitions. [2024-10-11 16:26:27,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-11 16:26:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 714 transitions. [2024-10-11 16:26:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-11 16:26:27,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:27,816 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:26:27,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:27,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1380635871, now seen corresponding path program 1 times [2024-10-11 16:26:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049149453] [2024-10-11 16:26:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:28,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-11 16:26:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:28,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 16:26:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:28,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-11 16:26:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:28,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-11 16:26:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 16:26:28,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049149453] [2024-10-11 16:26:28,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049149453] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389837417] [2024-10-11 16:26:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:28,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:28,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:26:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:29,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 16:26:29,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:29,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389837417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:29,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-11 16:26:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224512838] [2024-10-11 16:26:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:26:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:26:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:29,191 INFO L87 Difference]: Start difference. First operand 535 states and 714 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-10-11 16:26:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:29,421 INFO L93 Difference]: Finished difference Result 1033 states and 1389 transitions. [2024-10-11 16:26:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:26:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 182 [2024-10-11 16:26:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:29,424 INFO L225 Difference]: With dead ends: 1033 [2024-10-11 16:26:29,424 INFO L226 Difference]: Without dead ends: 535 [2024-10-11 16:26:29,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:29,425 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 13 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:29,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1047 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 16:26:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-10-11 16:26:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-10-11 16:26:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 524 states have (on average 1.3244274809160306) internal successors, (694), 524 states have internal predecessors, (694), 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) [2024-10-11 16:26:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 712 transitions. [2024-10-11 16:26:29,437 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 712 transitions. Word has length 182 [2024-10-11 16:26:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:29,437 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 712 transitions. [2024-10-11 16:26:29,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-10-11 16:26:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 712 transitions. [2024-10-11 16:26:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-11 16:26:29,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:29,439 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:29,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 16:26:29,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:29,640 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:29,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash 355420456, now seen corresponding path program 1 times [2024-10-11 16:26:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608816494] [2024-10-11 16:26:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:30,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:26:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:30,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:26:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:30,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-11 16:26:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:30,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-11 16:26:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:30,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:30,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608816494] [2024-10-11 16:26:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608816494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:30,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:30,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 16:26:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195593766] [2024-10-11 16:26:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:30,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:26:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:26:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:30,110 INFO L87 Difference]: Start difference. First operand 535 states and 712 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 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) [2024-10-11 16:26:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:31,149 INFO L93 Difference]: Finished difference Result 1038 states and 1402 transitions. [2024-10-11 16:26:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:26:31,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 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 183 [2024-10-11 16:26:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:31,152 INFO L225 Difference]: With dead ends: 1038 [2024-10-11 16:26:31,152 INFO L226 Difference]: Without dead ends: 543 [2024-10-11 16:26:31,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:31,153 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 6 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:31,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1950 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 16:26:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-11 16:26:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2024-10-11 16:26:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 530 states have (on average 1.320754716981132) internal successors, (700), 530 states have internal predecessors, (700), 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) [2024-10-11 16:26:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 718 transitions. [2024-10-11 16:26:31,165 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 718 transitions. Word has length 183 [2024-10-11 16:26:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:31,165 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 718 transitions. [2024-10-11 16:26:31,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 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) [2024-10-11 16:26:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 718 transitions. [2024-10-11 16:26:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 16:26:31,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:31,166 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:31,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 16:26:31,167 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:31,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1189022662, now seen corresponding path program 1 times [2024-10-11 16:26:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046789318] [2024-10-11 16:26:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:31,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:26:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:31,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:26:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:31,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-11 16:26:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:31,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-11 16:26:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 16:26:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046789318] [2024-10-11 16:26:31,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046789318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:31,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:31,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:26:31,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323271489] [2024-10-11 16:26:31,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:31,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:26:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:26:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:26:31,573 INFO L87 Difference]: Start difference. First operand 541 states and 718 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 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) [2024-10-11 16:26:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:32,456 INFO L93 Difference]: Finished difference Result 1044 states and 1406 transitions. [2024-10-11 16:26:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:26:32,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 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 184 [2024-10-11 16:26:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:32,461 INFO L225 Difference]: With dead ends: 1044 [2024-10-11 16:26:32,461 INFO L226 Difference]: Without dead ends: 553 [2024-10-11 16:26:32,462 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 [2024-10-11 16:26:32,462 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:32,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2245 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 16:26:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-10-11 16:26:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 549. [2024-10-11 16:26:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 538 states have (on average 1.3197026022304832) internal successors, (710), 538 states have internal predecessors, (710), 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) [2024-10-11 16:26:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 728 transitions. [2024-10-11 16:26:32,476 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 728 transitions. Word has length 184 [2024-10-11 16:26:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:32,476 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 728 transitions. [2024-10-11 16:26:32,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 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) [2024-10-11 16:26:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 728 transitions. [2024-10-11 16:26:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 16:26:32,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:32,478 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:26:32,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:26:32,478 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:32,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2058379490, now seen corresponding path program 1 times [2024-10-11 16:26:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142427393] [2024-10-11 16:26:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:26:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:26:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-11 16:26:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-11 16:26:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 16:26:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142427393] [2024-10-11 16:26:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142427393] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805928496] [2024-10-11 16:26:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:33,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:33,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:26:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:33,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 16:26:33,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 16:26:33,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:33,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805928496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:33,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:33,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 16:26:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790750295] [2024-10-11 16:26:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:33,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 16:26:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 16:26:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:33,702 INFO L87 Difference]: Start difference. First operand 549 states and 728 transitions. Second operand has 5 states, 4 states have (on average 43.0) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 16:26:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:33,798 INFO L93 Difference]: Finished difference Result 1068 states and 1431 transitions. [2024-10-11 16:26:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:26:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 43.0) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2024-10-11 16:26:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:33,801 INFO L225 Difference]: With dead ends: 1068 [2024-10-11 16:26:33,801 INFO L226 Difference]: Without dead ends: 613 [2024-10-11 16:26:33,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:26:33,803 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 367 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:33,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1689 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:26:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-10-11 16:26:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 551. [2024-10-11 16:26:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 539 states have (on average 1.320964749536178) internal successors, (712), 540 states have internal predecessors, (712), 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) [2024-10-11 16:26:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 733 transitions. [2024-10-11 16:26:33,821 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 733 transitions. Word has length 184 [2024-10-11 16:26:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:33,822 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 733 transitions. [2024-10-11 16:26:33,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 43.0) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 16:26:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 733 transitions. [2024-10-11 16:26:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-11 16:26:33,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:33,823 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] [2024-10-11 16:26:33,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 16:26:34,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:34,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:34,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1533823042, now seen corresponding path program 1 times [2024-10-11 16:26:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638963998] [2024-10-11 16:26:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:34,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:26:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:34,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 16:26:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:34,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-11 16:26:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:34,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-11 16:26:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638963998] [2024-10-11 16:26:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638963998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325217088] [2024-10-11 16:26:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:34,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:34,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:34,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 16:26:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:35,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 16:26:35,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:35,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325217088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:35,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:35,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:26:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38554830] [2024-10-11 16:26:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:35,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:26:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:26:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:26:35,538 INFO L87 Difference]: Start difference. First operand 551 states and 733 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 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) [2024-10-11 16:26:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:35,960 INFO L93 Difference]: Finished difference Result 1058 states and 1420 transitions. [2024-10-11 16:26:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:26:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 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 [2024-10-11 16:26:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:35,963 INFO L225 Difference]: With dead ends: 1058 [2024-10-11 16:26:35,963 INFO L226 Difference]: Without dead ends: 561 [2024-10-11 16:26:35,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:26:35,964 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 8 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:35,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1970 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:26:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-10-11 16:26:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 551. [2024-10-11 16:26:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 539 states have (on average 1.320964749536178) internal successors, (712), 540 states have internal predecessors, (712), 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) [2024-10-11 16:26:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 733 transitions. [2024-10-11 16:26:35,979 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 733 transitions. Word has length 188 [2024-10-11 16:26:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:35,979 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 733 transitions. [2024-10-11 16:26:35,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 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) [2024-10-11 16:26:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 733 transitions. [2024-10-11 16:26:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-11 16:26:35,981 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:35,981 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] [2024-10-11 16:26:35,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 16:26:36,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 16:26:36,182 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:36,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash -166960612, now seen corresponding path program 1 times [2024-10-11 16:26:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:36,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203775871] [2024-10-11 16:26:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:36,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 16:26:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:36,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 16:26:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:36,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-11 16:26:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:36,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-11 16:26:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:36,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:36,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203775871] [2024-10-11 16:26:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203775871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 16:26:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541208558] [2024-10-11 16:26:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:36,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:26:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:26:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:26:36,657 INFO L87 Difference]: Start difference. First operand 551 states and 733 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 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) [2024-10-11 16:26:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:37,342 INFO L93 Difference]: Finished difference Result 1063 states and 1424 transitions. [2024-10-11 16:26:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 16:26:37,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 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 [2024-10-11 16:26:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:37,344 INFO L225 Difference]: With dead ends: 1063 [2024-10-11 16:26:37,344 INFO L226 Difference]: Without dead ends: 571 [2024-10-11 16:26:37,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:26:37,347 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 18 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:37,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2641 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:26:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-10-11 16:26:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2024-10-11 16:26:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 553 states have (on average 1.3200723327305606) internal successors, (730), 554 states have internal predecessors, (730), 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) [2024-10-11 16:26:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 751 transitions. [2024-10-11 16:26:37,358 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 751 transitions. Word has length 189 [2024-10-11 16:26:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:37,359 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 751 transitions. [2024-10-11 16:26:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 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) [2024-10-11 16:26:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 751 transitions. [2024-10-11 16:26:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-11 16:26:37,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:37,361 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] [2024-10-11 16:26:37,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 16:26:37,361 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:37,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 864609720, now seen corresponding path program 1 times [2024-10-11 16:26:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:37,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792712200] [2024-10-11 16:26:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 16:26:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 16:26:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-11 16:26:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-11 16:26:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792712200] [2024-10-11 16:26:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792712200] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677799670] [2024-10-11 16:26:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:38,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:38,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:38,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:38,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 16:26:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:38,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 16:26:38,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:39,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677799670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:39,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-10-11 16:26:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215675045] [2024-10-11 16:26:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:39,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:26:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:26:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:26:39,143 INFO L87 Difference]: Start difference. First operand 565 states and 751 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 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) [2024-10-11 16:26:41,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 16:26:41,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:41,821 INFO L93 Difference]: Finished difference Result 1084 states and 1451 transitions. [2024-10-11 16:26:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:26:41,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 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 [2024-10-11 16:26:41,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:41,823 INFO L225 Difference]: With dead ends: 1084 [2024-10-11 16:26:41,823 INFO L226 Difference]: Without dead ends: 585 [2024-10-11 16:26:41,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:26:41,824 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 13 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:41,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2314 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-11 16:26:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-10-11 16:26:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 575. [2024-10-11 16:26:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 563 states have (on average 1.3179396092362345) internal successors, (742), 564 states have internal predecessors, (742), 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) [2024-10-11 16:26:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 763 transitions. [2024-10-11 16:26:41,835 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 763 transitions. Word has length 189 [2024-10-11 16:26:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:41,835 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 763 transitions. [2024-10-11 16:26:41,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 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) [2024-10-11 16:26:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 763 transitions. [2024-10-11 16:26:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-11 16:26:41,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:41,837 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, 1] [2024-10-11 16:26:41,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 16:26:42,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 16:26:42,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:42,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash 98438958, now seen corresponding path program 1 times [2024-10-11 16:26:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:42,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122561265] [2024-10-11 16:26:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:42,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:42,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:42,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:42,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-11 16:26:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:42,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 16:26:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122561265] [2024-10-11 16:26:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122561265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 16:26:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217225596] [2024-10-11 16:26:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:42,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:26:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:26:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:26:42,606 INFO L87 Difference]: Start difference. First operand 575 states and 763 transitions. Second operand has 11 states, 11 states have (on average 15.727272727272727) internal successors, (173), 10 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) [2024-10-11 16:26:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:43,352 INFO L93 Difference]: Finished difference Result 1102 states and 1475 transitions. [2024-10-11 16:26:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:26:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.727272727272727) internal successors, (173), 10 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 190 [2024-10-11 16:26:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:43,358 INFO L225 Difference]: With dead ends: 1102 [2024-10-11 16:26:43,358 INFO L226 Difference]: Without dead ends: 593 [2024-10-11 16:26:43,359 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 [2024-10-11 16:26:43,359 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 24 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:43,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2647 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:26:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-10-11 16:26:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 581. [2024-10-11 16:26:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 569 states have (on average 1.3145869947275923) internal successors, (748), 570 states have internal predecessors, (748), 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) [2024-10-11 16:26:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 769 transitions. [2024-10-11 16:26:43,373 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 769 transitions. Word has length 190 [2024-10-11 16:26:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:43,373 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 769 transitions. [2024-10-11 16:26:43,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.727272727272727) internal successors, (173), 10 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) [2024-10-11 16:26:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 769 transitions. [2024-10-11 16:26:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-11 16:26:43,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:43,375 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, 1] [2024-10-11 16:26:43,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 16:26:43,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:43,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2012348178, now seen corresponding path program 1 times [2024-10-11 16:26:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761209841] [2024-10-11 16:26:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:44,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:44,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:44,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-11 16:26:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:44,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 16:26:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:44,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:44,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761209841] [2024-10-11 16:26:44,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761209841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:44,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449986332] [2024-10-11 16:26:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:44,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:44,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:44,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:44,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 16:26:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:45,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 16:26:45,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 16:26:45,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449986332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:45,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2024-10-11 16:26:45,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29956192] [2024-10-11 16:26:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:45,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 16:26:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 16:26:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:26:45,201 INFO L87 Difference]: Start difference. First operand 581 states and 769 transitions. Second operand has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 16:26:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:45,538 INFO L93 Difference]: Finished difference Result 979 states and 1310 transitions. [2024-10-11 16:26:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:26:45,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 190 [2024-10-11 16:26:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:45,541 INFO L225 Difference]: With dead ends: 979 [2024-10-11 16:26:45,541 INFO L226 Difference]: Without dead ends: 603 [2024-10-11 16:26:45,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:26:45,542 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 25 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:45,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2030 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:26:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-10-11 16:26:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 595. [2024-10-11 16:26:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 583 states have (on average 1.3104631217838765) internal successors, (764), 584 states have internal predecessors, (764), 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) [2024-10-11 16:26:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 785 transitions. [2024-10-11 16:26:45,555 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 785 transitions. Word has length 190 [2024-10-11 16:26:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:45,555 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 785 transitions. [2024-10-11 16:26:45,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 16:26:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 785 transitions. [2024-10-11 16:26:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-11 16:26:45,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:45,557 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, 1, 1] [2024-10-11 16:26:45,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 16:26:45,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 16:26:45,758 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:45,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1350343070, now seen corresponding path program 1 times [2024-10-11 16:26:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:45,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122766045] [2024-10-11 16:26:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:45,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:46,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:46,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:46,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-11 16:26:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:46,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-11 16:26:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:46,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122766045] [2024-10-11 16:26:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122766045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:26:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039741229] [2024-10-11 16:26:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:46,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:26:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:26:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:26:46,333 INFO L87 Difference]: Start difference. First operand 595 states and 785 transitions. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 7 states have internal predecessors, (174), 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) [2024-10-11 16:26:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:47,068 INFO L93 Difference]: Finished difference Result 985 states and 1305 transitions. [2024-10-11 16:26:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:26:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 7 states have internal predecessors, (174), 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 191 [2024-10-11 16:26:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:47,071 INFO L225 Difference]: With dead ends: 985 [2024-10-11 16:26:47,071 INFO L226 Difference]: Without dead ends: 603 [2024-10-11 16:26:47,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-11 16:26:47,073 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 22 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:47,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2242 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:26:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-10-11 16:26:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 589. [2024-10-11 16:26:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 577 states have (on average 1.3067590987868285) internal successors, (754), 578 states have internal predecessors, (754), 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) [2024-10-11 16:26:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 775 transitions. [2024-10-11 16:26:47,083 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 775 transitions. Word has length 191 [2024-10-11 16:26:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:47,084 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 775 transitions. [2024-10-11 16:26:47,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 7 states have internal predecessors, (174), 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) [2024-10-11 16:26:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 775 transitions. [2024-10-11 16:26:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-11 16:26:47,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:47,085 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, 1, 1, 1] [2024-10-11 16:26:47,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 16:26:47,085 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:47,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -759491539, now seen corresponding path program 1 times [2024-10-11 16:26:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707428361] [2024-10-11 16:26:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:47,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:47,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:47,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-11 16:26:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:47,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-11 16:26:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707428361] [2024-10-11 16:26:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707428361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:47,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:26:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:26:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094629546] [2024-10-11 16:26:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:47,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:26:47,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:26:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:26:47,572 INFO L87 Difference]: Start difference. First operand 589 states and 775 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 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) [2024-10-11 16:26:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:48,204 INFO L93 Difference]: Finished difference Result 984 states and 1302 transitions. [2024-10-11 16:26:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:26:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 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 192 [2024-10-11 16:26:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:48,207 INFO L225 Difference]: With dead ends: 984 [2024-10-11 16:26:48,207 INFO L226 Difference]: Without dead ends: 607 [2024-10-11 16:26:48,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:26:48,208 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 17 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:48,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2264 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 16:26:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-10-11 16:26:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 595. [2024-10-11 16:26:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 583 states have (on average 1.3036020583190395) internal successors, (760), 584 states have internal predecessors, (760), 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) [2024-10-11 16:26:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 781 transitions. [2024-10-11 16:26:48,220 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 781 transitions. Word has length 192 [2024-10-11 16:26:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:48,220 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 781 transitions. [2024-10-11 16:26:48,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 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) [2024-10-11 16:26:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 781 transitions. [2024-10-11 16:26:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-11 16:26:48,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:48,222 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, 1, 1, 1, 1] [2024-10-11 16:26:48,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 16:26:48,222 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:48,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 205449095, now seen corresponding path program 1 times [2024-10-11 16:26:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809828130] [2024-10-11 16:26:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:48,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:49,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:49,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 16:26:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:49,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-11 16:26:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809828130] [2024-10-11 16:26:49,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809828130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287761166] [2024-10-11 16:26:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:49,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:49,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:49,054 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:49,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 16:26:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:49,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 16:26:49,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:50,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287761166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:50,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-11 16:26:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321683212] [2024-10-11 16:26:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:50,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:26:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:26:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:26:50,577 INFO L87 Difference]: Start difference. First operand 595 states and 781 transitions. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 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) [2024-10-11 16:26:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:51,390 INFO L93 Difference]: Finished difference Result 1141 states and 1513 transitions. [2024-10-11 16:26:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 16:26:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 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 [2024-10-11 16:26:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:51,393 INFO L225 Difference]: With dead ends: 1141 [2024-10-11 16:26:51,393 INFO L226 Difference]: Without dead ends: 615 [2024-10-11 16:26:51,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:26:51,394 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 13 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:51,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2932 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 16:26:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-10-11 16:26:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 609. [2024-10-11 16:26:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 597 states have (on average 1.3031825795644891) internal successors, (778), 598 states have internal predecessors, (778), 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) [2024-10-11 16:26:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 799 transitions. [2024-10-11 16:26:51,404 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 799 transitions. Word has length 193 [2024-10-11 16:26:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:51,404 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 799 transitions. [2024-10-11 16:26:51,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 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) [2024-10-11 16:26:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 799 transitions. [2024-10-11 16:26:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-11 16:26:51,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:51,405 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, 1, 1, 1, 1] [2024-10-11 16:26:51,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 16:26:51,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:51,606 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:51,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1578356985, now seen corresponding path program 1 times [2024-10-11 16:26:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:51,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593349131] [2024-10-11 16:26:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 16:26:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-11 16:26:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593349131] [2024-10-11 16:26:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593349131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543431228] [2024-10-11 16:26:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:52,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:52,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:52,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:26:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:52,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:26:52,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 16:26:53,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:26:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543431228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:26:53,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:26:53,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:26:53,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938948410] [2024-10-11 16:26:53,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:26:53,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:26:53,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:26:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:26:53,013 INFO L87 Difference]: Start difference. First operand 609 states and 799 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-11 16:26:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:53,328 INFO L93 Difference]: Finished difference Result 1147 states and 1517 transitions. [2024-10-11 16:26:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:26:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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 [2024-10-11 16:26:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:53,330 INFO L225 Difference]: With dead ends: 1147 [2024-10-11 16:26:53,330 INFO L226 Difference]: Without dead ends: 619 [2024-10-11 16:26:53,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:26:53,331 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 31 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:53,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1975 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:26:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-11 16:26:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 613. [2024-10-11 16:26:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 601 states have (on average 1.3011647254575707) internal successors, (782), 602 states have internal predecessors, (782), 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) [2024-10-11 16:26:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 803 transitions. [2024-10-11 16:26:53,341 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 803 transitions. Word has length 193 [2024-10-11 16:26:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:53,341 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 803 transitions. [2024-10-11 16:26:53,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-11 16:26:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 803 transitions. [2024-10-11 16:26:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-11 16:26:53,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:53,343 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, 1, 1, 1, 1] [2024-10-11 16:26:53,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 16:26:53,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:53,543 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:53,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1561000864, now seen corresponding path program 1 times [2024-10-11 16:26:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284975792] [2024-10-11 16:26:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:53,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:26:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 16:26:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-11 16:26:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284975792] [2024-10-11 16:26:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284975792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773114572] [2024-10-11 16:26:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:54,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:54,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:54,190 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:54,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:26:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:54,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:26:54,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 16:26:54,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:26:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 16:26:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773114572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:26:55,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:26:55,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-10-11 16:26:55,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106745598] [2024-10-11 16:26:55,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:26:55,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 16:26:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 16:26:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:26:55,096 INFO L87 Difference]: Start difference. First operand 613 states and 803 transitions. Second operand has 12 states, 9 states have (on average 28.555555555555557) internal successors, (257), 11 states have internal predecessors, (257), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-11 16:26:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:55,653 INFO L93 Difference]: Finished difference Result 1179 states and 1572 transitions. [2024-10-11 16:26:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 16:26:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 28.555555555555557) internal successors, (257), 11 states have internal predecessors, (257), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 193 [2024-10-11 16:26:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:55,656 INFO L225 Difference]: With dead ends: 1179 [2024-10-11 16:26:55,656 INFO L226 Difference]: Without dead ends: 684 [2024-10-11 16:26:55,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-10-11 16:26:55,658 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 310 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:55,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1858 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:26:55,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-10-11 16:26:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 621. [2024-10-11 16:26:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 608 states have (on average 1.3075657894736843) internal successors, (795), 609 states have internal predecessors, (795), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-10-11 16:26:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 819 transitions. [2024-10-11 16:26:55,670 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 819 transitions. Word has length 193 [2024-10-11 16:26:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:55,670 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 819 transitions. [2024-10-11 16:26:55,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 28.555555555555557) internal successors, (257), 11 states have internal predecessors, (257), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-11 16:26:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 819 transitions. [2024-10-11 16:26:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-11 16:26:55,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:55,671 INFO L215 NwaCegarLoop]: trace histogram [12, 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, 1, 1] [2024-10-11 16:26:55,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:26:55,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:55,872 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:55,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash 74877728, now seen corresponding path program 2 times [2024-10-11 16:26:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807645778] [2024-10-11 16:26:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:56,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 16:26:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:56,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 16:26:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:56,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-11 16:26:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-11 16:26:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:56,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807645778] [2024-10-11 16:26:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807645778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398319134] [2024-10-11 16:26:56,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:26:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:56,536 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:56,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 16:26:57,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:26:57,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:26:57,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 16:26:57,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:26:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 16:26:57,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:26:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-11 16:26:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398319134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:26:57,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:26:57,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 16 [2024-10-11 16:26:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791805659] [2024-10-11 16:26:57,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:26:57,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 16:26:57,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:26:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 16:26:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:26:57,555 INFO L87 Difference]: Start difference. First operand 621 states and 819 transitions. Second operand has 16 states, 13 states have (on average 19.615384615384617) internal successors, (255), 15 states have internal predecessors, (255), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 16:26:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:26:58,241 INFO L93 Difference]: Finished difference Result 1193 states and 1596 transitions. [2024-10-11 16:26:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:26:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 19.615384615384617) internal successors, (255), 15 states have internal predecessors, (255), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) Word has length 201 [2024-10-11 16:26:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:26:58,244 INFO L225 Difference]: With dead ends: 1193 [2024-10-11 16:26:58,244 INFO L226 Difference]: Without dead ends: 689 [2024-10-11 16:26:58,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-10-11 16:26:58,245 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 333 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:26:58,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 3675 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 16:26:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-11 16:26:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 625. [2024-10-11 16:26:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 612 states have (on average 1.3088235294117647) internal successors, (801), 613 states have internal predecessors, (801), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-11 16:26:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 822 transitions. [2024-10-11 16:26:58,260 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 822 transitions. Word has length 201 [2024-10-11 16:26:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:26:58,261 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 822 transitions. [2024-10-11 16:26:58,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 19.615384615384617) internal successors, (255), 15 states have internal predecessors, (255), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 16:26:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 822 transitions. [2024-10-11 16:26:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-10-11 16:26:58,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:26:58,262 INFO L215 NwaCegarLoop]: trace histogram [20, 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, 1, 1] [2024-10-11 16:26:58,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 16:26:58,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 16:26:58,467 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:26:58,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:26:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash 856831136, now seen corresponding path program 3 times [2024-10-11 16:26:58,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:26:58,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928525117] [2024-10-11 16:26:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:26:58,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:26:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:59,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:26:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:59,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-11 16:26:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:59,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-11 16:26:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:59,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-11 16:26:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:26:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 16:26:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:26:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928525117] [2024-10-11 16:26:59,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928525117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:26:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704190954] [2024-10-11 16:26:59,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 16:26:59,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:26:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:26:59,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:26:59,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 16:27:00,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 16:27:00,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:27:00,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 16:27:00,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:27:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-11 16:27:00,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:27:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704190954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:27:00,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:27:00,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-10-11 16:27:00,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688681493] [2024-10-11 16:27:00,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:27:00,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:27:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:27:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:27:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:27:00,479 INFO L87 Difference]: Start difference. First operand 625 states and 822 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-11 16:27:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:27:00,924 INFO L93 Difference]: Finished difference Result 1182 states and 1569 transitions. [2024-10-11 16:27:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:27:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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 209 [2024-10-11 16:27:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:27:00,927 INFO L225 Difference]: With dead ends: 1182 [2024-10-11 16:27:00,927 INFO L226 Difference]: Without dead ends: 635 [2024-10-11 16:27:00,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:27:00,928 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 6 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:27:00,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1964 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:27:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-10-11 16:27:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 625. [2024-10-11 16:27:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 612 states have (on average 1.3088235294117647) internal successors, (801), 613 states have internal predecessors, (801), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-11 16:27:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 822 transitions. [2024-10-11 16:27:00,941 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 822 transitions. Word has length 209 [2024-10-11 16:27:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:27:00,941 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 822 transitions. [2024-10-11 16:27:00,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-11 16:27:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 822 transitions. [2024-10-11 16:27:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-11 16:27:00,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:27:00,942 INFO L215 NwaCegarLoop]: trace histogram [20, 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, 1, 1, 1] [2024-10-11 16:27:00,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 16:27:01,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 16:27:01,144 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:27:01,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:27:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1739363808, now seen corresponding path program 1 times [2024-10-11 16:27:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:27:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984474204] [2024-10-11 16:27:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:27:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:27:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:01,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:27:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:02,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 16:27:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:02,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-11 16:27:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:02,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-11 16:27:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 16:27:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:27:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984474204] [2024-10-11 16:27:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984474204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:27:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027759089] [2024-10-11 16:27:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:27:02,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:27:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:27:02,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:27:02,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 16:27:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:27:03,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 311 conjuncts are in the unsatisfiable core [2024-10-11 16:27:03,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:27:03,532 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 [2024-10-11 16:27:03,574 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 [2024-10-11 16:27:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-10-11 16:27:04,362 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 [2024-10-11 16:27:04,380 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 [2024-10-11 16:27:04,407 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-10-11 16:27:04,408 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 [2024-10-11 16:27:04,419 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 [2024-10-11 16:27:04,549 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 [2024-10-11 16:27:04,554 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 [2024-10-11 16:27:04,861 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-11 16:27:04,862 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 50 treesize of output 45 [2024-10-11 16:27:04,873 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