./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:47:44,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:47:44,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:47:44,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:47:44,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:47:44,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:47:44,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:47:44,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:47:44,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:47:44,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:47:44,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:47:44,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:47:44,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:47:44,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:47:44,695 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:47:44,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:47:44,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:47:44,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:47:44,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:47:44,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:47:44,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:47:44,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:47:44,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:47:44,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:47:44,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:47:44,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:47:44,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:47:44,705 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:47:44,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:47:44,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:47:44,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:47:44,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:47:44,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:47:44,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:47:44,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:47:44,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:47:44,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:47:44,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:47:44,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:47:44,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:47:44,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:47:44,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:47:44,709 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b [2024-11-19 00:47:44,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:47:44,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:47:44,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:47:44,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:47:44,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:47:44,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-19 00:47:46,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:47:46,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:47:46,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-19 00:47:46,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ac643c8/10df22ad0f15484ab67073d2041189e1/FLAGd0b4a6fce [2024-11-19 00:47:46,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ac643c8/10df22ad0f15484ab67073d2041189e1 [2024-11-19 00:47:46,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:47:46,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:47:46,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:47:46,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:47:46,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:47:46,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f079979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46, skipping insertion in model container [2024-11-19 00:47:46,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:47:46,667 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-11-19 00:47:46,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:47:46,724 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:47:46,733 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-11-19 00:47:46,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:47:46,785 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:47:46,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46 WrapperNode [2024-11-19 00:47:46,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:47:46,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:47:46,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:47:46,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:47:46,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,834 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 362 [2024-11-19 00:47:46,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:47:46,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:47:46,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:47:46,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:47:46,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,872 INFO L175 MemorySlicer]: Split 96 memory accesses to 5 slices as follows [2, 12, 32, 24, 26]. 33 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 4, 3, 3]. The 16 writes are split as follows [0, 2, 6, 4, 4]. [2024-11-19 00:47:46,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:47:46,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:47:46,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:47:46,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:47:46,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (1/1) ... [2024-11-19 00:47:46,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:47:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:47:46,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 00:47:46,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 00:47:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:47:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 00:47:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 00:47:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 00:47:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 00:47:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 00:47:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 00:47:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 00:47:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 00:47:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 00:47:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 00:47:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:47:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 00:47:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:47:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:47:47,101 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:47:47,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:47:47,467 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-19 00:47:47,468 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:47:47,478 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:47:47,478 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:47:47,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:47:47 BoogieIcfgContainer [2024-11-19 00:47:47,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:47:47,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:47:47,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:47:47,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:47:47,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:47:46" (1/3) ... [2024-11-19 00:47:47,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb24d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:47:47, skipping insertion in model container [2024-11-19 00:47:47,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:47:46" (2/3) ... [2024-11-19 00:47:47,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb24d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:47:47, skipping insertion in model container [2024-11-19 00:47:47,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:47:47" (3/3) ... [2024-11-19 00:47:47,486 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-19 00:47:47,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:47:47,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:47:47,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:47:47,560 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;@73bf33af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:47:47,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:47:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 00:47:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 00:47:47,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:47,576 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:47,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:47,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1500553373, now seen corresponding path program 1 times [2024-11-19 00:47:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072920140] [2024-11-19 00:47:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 00:47:47,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:47,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072920140] [2024-11-19 00:47:47,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072920140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:47:47,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922763742] [2024-11-19 00:47:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:47,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:47:47,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:47:47,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:47:47,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:47:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:48,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:47:48,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:47:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 00:47:48,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:47:48,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922763742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:47:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:47:48,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465557895] [2024-11-19 00:47:48,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:48,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:47:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:47:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:47:48,142 INFO L87 Difference]: Start difference. First operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:48,172 INFO L93 Difference]: Finished difference Result 161 states and 256 transitions. [2024-11-19 00:47:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:47:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-11-19 00:47:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:48,182 INFO L225 Difference]: With dead ends: 161 [2024-11-19 00:47:48,182 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 00:47:48,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:47:48,190 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:48,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:47:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 00:47:48,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-19 00:47:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 00:47:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2024-11-19 00:47:48,229 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 131 [2024-11-19 00:47:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:48,229 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2024-11-19 00:47:48,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2024-11-19 00:47:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 00:47:48,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:48,234 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:48,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:47:48,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:47:48,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:48,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1926669505, now seen corresponding path program 1 times [2024-11-19 00:47:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:48,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358168027] [2024-11-19 00:47:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:48,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358168027] [2024-11-19 00:47:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358168027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:47:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028961269] [2024-11-19 00:47:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:48,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:47:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:47:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:48,940 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:47:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:49,149 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2024-11-19 00:47:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:47:49,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2024-11-19 00:47:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:49,153 INFO L225 Difference]: With dead ends: 235 [2024-11-19 00:47:49,154 INFO L226 Difference]: Without dead ends: 158 [2024-11-19 00:47:49,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:49,155 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 102 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:49,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 365 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:47:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-19 00:47:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2024-11-19 00:47:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 00:47:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 214 transitions. [2024-11-19 00:47:49,189 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 214 transitions. Word has length 131 [2024-11-19 00:47:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:49,190 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 214 transitions. [2024-11-19 00:47:49,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:47:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 214 transitions. [2024-11-19 00:47:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:49,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:49,191 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:49,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:47:49,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:49,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1794896017, now seen corresponding path program 1 times [2024-11-19 00:47:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835254119] [2024-11-19 00:47:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835254119] [2024-11-19 00:47:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835254119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:49,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:49,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:47:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483539058] [2024-11-19 00:47:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:49,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:47:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:47:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:47:49,310 INFO L87 Difference]: Start difference. First operand 148 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:49,337 INFO L93 Difference]: Finished difference Result 248 states and 363 transitions. [2024-11-19 00:47:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:47:49,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-11-19 00:47:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:49,341 INFO L225 Difference]: With dead ends: 248 [2024-11-19 00:47:49,343 INFO L226 Difference]: Without dead ends: 150 [2024-11-19 00:47:49,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:47:49,347 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:49,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:47:49,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-19 00:47:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-19 00:47:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 111 states have internal predecessors, (144), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 00:47:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2024-11-19 00:47:49,373 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 133 [2024-11-19 00:47:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:49,376 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2024-11-19 00:47:49,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2024-11-19 00:47:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:49,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:49,381 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:49,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:47:49,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:49,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash 505926573, now seen corresponding path program 1 times [2024-11-19 00:47:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130413196] [2024-11-19 00:47:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:49,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130413196] [2024-11-19 00:47:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130413196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:49,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:47:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752383192] [2024-11-19 00:47:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:49,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:47:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:47:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:47:49,753 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:49,926 INFO L93 Difference]: Finished difference Result 322 states and 467 transitions. [2024-11-19 00:47:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:47:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-19 00:47:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:49,929 INFO L225 Difference]: With dead ends: 322 [2024-11-19 00:47:49,930 INFO L226 Difference]: Without dead ends: 228 [2024-11-19 00:47:49,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:49,933 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 121 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:49,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 254 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:47:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-19 00:47:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2024-11-19 00:47:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-19 00:47:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 326 transitions. [2024-11-19 00:47:49,980 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 326 transitions. Word has length 133 [2024-11-19 00:47:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:49,981 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 326 transitions. [2024-11-19 00:47:49,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 326 transitions. [2024-11-19 00:47:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:49,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:49,983 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:49,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:47:49,984 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:49,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash -80879441, now seen corresponding path program 1 times [2024-11-19 00:47:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:49,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490698623] [2024-11-19 00:47:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490698623] [2024-11-19 00:47:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490698623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:50,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:50,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:47:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994676217] [2024-11-19 00:47:50,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:50,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:47:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:47:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:47:50,135 INFO L87 Difference]: Start difference. First operand 226 states and 326 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:50,269 INFO L93 Difference]: Finished difference Result 460 states and 659 transitions. [2024-11-19 00:47:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:47:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-11-19 00:47:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:50,273 INFO L225 Difference]: With dead ends: 460 [2024-11-19 00:47:50,274 INFO L226 Difference]: Without dead ends: 293 [2024-11-19 00:47:50,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:47:50,276 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 81 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:50,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 309 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:47:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-19 00:47:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2024-11-19 00:47:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 216 states have internal predecessors, (274), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:47:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 410 transitions. [2024-11-19 00:47:50,303 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 410 transitions. Word has length 133 [2024-11-19 00:47:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:50,304 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 410 transitions. [2024-11-19 00:47:50,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 410 transitions. [2024-11-19 00:47:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:50,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:50,305 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:50,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:47:50,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:50,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash -473906451, now seen corresponding path program 1 times [2024-11-19 00:47:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876686977] [2024-11-19 00:47:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876686977] [2024-11-19 00:47:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876686977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:50,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:50,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:47:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025310109] [2024-11-19 00:47:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:50,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:47:50,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:47:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:47:50,903 INFO L87 Difference]: Start difference. First operand 290 states and 410 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:51,193 INFO L93 Difference]: Finished difference Result 643 states and 908 transitions. [2024-11-19 00:47:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:47:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-19 00:47:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:51,198 INFO L225 Difference]: With dead ends: 643 [2024-11-19 00:47:51,198 INFO L226 Difference]: Without dead ends: 423 [2024-11-19 00:47:51,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:47:51,199 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 163 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:51,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 364 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:47:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-19 00:47:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2024-11-19 00:47:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 328 states have (on average 1.295731707317073) internal successors, (425), 332 states have internal predecessors, (425), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:47:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 585 transitions. [2024-11-19 00:47:51,230 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 585 transitions. Word has length 133 [2024-11-19 00:47:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:51,231 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 585 transitions. [2024-11-19 00:47:51,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 585 transitions. [2024-11-19 00:47:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:51,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:51,232 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:51,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:47:51,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 206151919, now seen corresponding path program 1 times [2024-11-19 00:47:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108919289] [2024-11-19 00:47:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:51,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108919289] [2024-11-19 00:47:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108919289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:51,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:47:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098140390] [2024-11-19 00:47:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:51,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:47:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:47:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:51,375 INFO L87 Difference]: Start difference. First operand 418 states and 585 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:51,546 INFO L93 Difference]: Finished difference Result 886 states and 1245 transitions. [2024-11-19 00:47:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:47:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-19 00:47:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:51,550 INFO L225 Difference]: With dead ends: 886 [2024-11-19 00:47:51,550 INFO L226 Difference]: Without dead ends: 537 [2024-11-19 00:47:51,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:51,553 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 102 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:51,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 392 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:47:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-19 00:47:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 435. [2024-11-19 00:47:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 349 states have internal predecessors, (446), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:47:51,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 606 transitions. [2024-11-19 00:47:51,595 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 606 transitions. Word has length 133 [2024-11-19 00:47:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:51,596 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 606 transitions. [2024-11-19 00:47:51,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 606 transitions. [2024-11-19 00:47:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:47:51,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:51,598 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:51,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:47:51,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:51,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash -215741013, now seen corresponding path program 1 times [2024-11-19 00:47:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816708483] [2024-11-19 00:47:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:51,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816708483] [2024-11-19 00:47:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816708483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:47:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228059115] [2024-11-19 00:47:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:51,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:47:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:47:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:47:51,745 INFO L87 Difference]: Start difference. First operand 435 states and 606 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:51,909 INFO L93 Difference]: Finished difference Result 862 states and 1202 transitions. [2024-11-19 00:47:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:47:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-19 00:47:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:51,912 INFO L225 Difference]: With dead ends: 862 [2024-11-19 00:47:51,913 INFO L226 Difference]: Without dead ends: 503 [2024-11-19 00:47:51,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:47:51,914 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 104 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:51,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 393 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:47:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-19 00:47:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 417. [2024-11-19 00:47:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 327 states have (on average 1.2844036697247707) internal successors, (420), 331 states have internal predecessors, (420), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:47:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 580 transitions. [2024-11-19 00:47:51,945 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 580 transitions. Word has length 133 [2024-11-19 00:47:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:51,946 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 580 transitions. [2024-11-19 00:47:51,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 580 transitions. [2024-11-19 00:47:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:47:51,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:51,947 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:51,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:47:51,947 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:51,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1737620353, now seen corresponding path program 1 times [2024-11-19 00:47:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403657543] [2024-11-19 00:47:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:47:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403657543] [2024-11-19 00:47:52,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403657543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:47:52,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:47:52,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:47:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747489889] [2024-11-19 00:47:52,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:47:52,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:47:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:47:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:47:52,300 INFO L87 Difference]: Start difference. First operand 417 states and 580 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:52,516 INFO L93 Difference]: Finished difference Result 1038 states and 1438 transitions. [2024-11-19 00:47:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:47:52,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2024-11-19 00:47:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:52,521 INFO L225 Difference]: With dead ends: 1038 [2024-11-19 00:47:52,522 INFO L226 Difference]: Without dead ends: 697 [2024-11-19 00:47:52,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:47:52,524 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 143 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:52,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 545 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:47:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-19 00:47:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 491. [2024-11-19 00:47:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.2892768079800498) internal successors, (517), 405 states have internal predecessors, (517), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:47:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 677 transitions. [2024-11-19 00:47:52,560 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 677 transitions. Word has length 135 [2024-11-19 00:47:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:52,560 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 677 transitions. [2024-11-19 00:47:52,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:47:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 677 transitions. [2024-11-19 00:47:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-19 00:47:52,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:52,561 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:52,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 00:47:52,562 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:52,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash 5422576, now seen corresponding path program 1 times [2024-11-19 00:47:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956737668] [2024-11-19 00:47:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:47:52,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771575570] [2024-11-19 00:47:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:47:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:47:52,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:47:52,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:47:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:52,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 00:47:52,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:47:54,209 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 15 treesize of output 1 [2024-11-19 00:47:54,430 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 15 treesize of output 1 [2024-11-19 00:47:55,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-19 00:47:55,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 20 [2024-11-19 00:47:55,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:47:55,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-11-19 00:47:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-19 00:47:55,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:47:55,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-11-19 00:47:55,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-19 00:47:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:47:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956737668] [2024-11-19 00:47:56,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:47:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771575570] [2024-11-19 00:47:56,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771575570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:47:56,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:47:56,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-19 00:47:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473658965] [2024-11-19 00:47:56,618 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:47:56,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:47:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:47:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:47:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:47:56,619 INFO L87 Difference]: Start difference. First operand 491 states and 677 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:47:57,221 INFO L93 Difference]: Finished difference Result 930 states and 1283 transitions. [2024-11-19 00:47:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:47:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2024-11-19 00:47:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:47:57,225 INFO L225 Difference]: With dead ends: 930 [2024-11-19 00:47:57,225 INFO L226 Difference]: Without dead ends: 520 [2024-11-19 00:47:57,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:47:57,229 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 109 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:47:57,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 578 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:47:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-19 00:47:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 491. [2024-11-19 00:47:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.286783042394015) internal successors, (516), 405 states have internal predecessors, (516), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:47:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 676 transitions. [2024-11-19 00:47:57,260 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 676 transitions. Word has length 136 [2024-11-19 00:47:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:47:57,261 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 676 transitions. [2024-11-19 00:47:57,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:47:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 676 transitions. [2024-11-19 00:47:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 00:47:57,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:47:57,262 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:47:57,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 00:47:57,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 00:47:57,463 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:47:57,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:47:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 312298948, now seen corresponding path program 1 times [2024-11-19 00:47:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:47:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112149208] [2024-11-19 00:47:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:47:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:47:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973946290] [2024-11-19 00:47:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:47:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:47:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:47:57,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:47:57,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:47:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:47:57,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 00:47:57,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:47:58,887 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 15 treesize of output 1 [2024-11-19 00:47:59,090 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 15 treesize of output 1 [2024-11-19 00:47:59,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-19 00:47:59,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:47:59,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:47:59,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 20 [2024-11-19 00:47:59,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:47:59,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-11-19 00:47:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-19 00:47:59,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:47:59,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 63 [2024-11-19 00:47:59,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2024-11-19 00:48:04,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112149208] [2024-11-19 00:48:04,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:48:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973946290] [2024-11-19 00:48:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973946290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:04,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:48:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-19 00:48:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332397437] [2024-11-19 00:48:04,273 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:48:04,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:48:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:48:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2024-11-19 00:48:04,275 INFO L87 Difference]: Start difference. First operand 491 states and 676 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:48:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:04,798 INFO L93 Difference]: Finished difference Result 931 states and 1281 transitions. [2024-11-19 00:48:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:48:04,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-11-19 00:48:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:04,801 INFO L225 Difference]: With dead ends: 931 [2024-11-19 00:48:04,801 INFO L226 Difference]: Without dead ends: 519 [2024-11-19 00:48:04,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=92, Invalid=249, Unknown=1, NotChecked=0, Total=342 [2024-11-19 00:48:04,803 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 177 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:04,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 497 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:48:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-19 00:48:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 495. [2024-11-19 00:48:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 404 states have (on average 1.2821782178217822) internal successors, (518), 408 states have internal predecessors, (518), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:48:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 678 transitions. [2024-11-19 00:48:04,833 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 678 transitions. Word has length 137 [2024-11-19 00:48:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:04,833 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 678 transitions. [2024-11-19 00:48:04,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:48:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 678 transitions. [2024-11-19 00:48:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:48:04,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:04,835 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:04,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 00:48:05,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:05,037 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:05,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 339308277, now seen corresponding path program 1 times [2024-11-19 00:48:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207104124] [2024-11-19 00:48:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:06,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207104124] [2024-11-19 00:48:06,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207104124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:06,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:48:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124794907] [2024-11-19 00:48:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:06,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:48:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:48:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:48:06,097 INFO L87 Difference]: Start difference. First operand 495 states and 678 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:06,543 INFO L93 Difference]: Finished difference Result 1185 states and 1626 transitions. [2024-11-19 00:48:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:48:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-19 00:48:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:06,547 INFO L225 Difference]: With dead ends: 1185 [2024-11-19 00:48:06,547 INFO L226 Difference]: Without dead ends: 782 [2024-11-19 00:48:06,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:48:06,548 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 122 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:06,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 748 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:48:06,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-19 00:48:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 565. [2024-11-19 00:48:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 474 states have (on average 1.2953586497890295) internal successors, (614), 478 states have internal predecessors, (614), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:48:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 774 transitions. [2024-11-19 00:48:06,592 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 774 transitions. Word has length 138 [2024-11-19 00:48:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:06,592 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 774 transitions. [2024-11-19 00:48:06,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 774 transitions. [2024-11-19 00:48:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:48:06,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:06,593 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:06,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:48:06,594 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:06,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1019366647, now seen corresponding path program 1 times [2024-11-19 00:48:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741529602] [2024-11-19 00:48:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:06,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741529602] [2024-11-19 00:48:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741529602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:06,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:06,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:48:06,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767720944] [2024-11-19 00:48:06,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:06,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:48:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:48:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:48:06,818 INFO L87 Difference]: Start difference. First operand 565 states and 774 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:07,057 INFO L93 Difference]: Finished difference Result 1098 states and 1514 transitions. [2024-11-19 00:48:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:48:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-19 00:48:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:07,060 INFO L225 Difference]: With dead ends: 1098 [2024-11-19 00:48:07,060 INFO L226 Difference]: Without dead ends: 628 [2024-11-19 00:48:07,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:48:07,061 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 103 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:07,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 420 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:48:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-19 00:48:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 565. [2024-11-19 00:48:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 474 states have (on average 1.2869198312236287) internal successors, (610), 478 states have internal predecessors, (610), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:48:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 770 transitions. [2024-11-19 00:48:07,101 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 770 transitions. Word has length 138 [2024-11-19 00:48:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:07,101 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 770 transitions. [2024-11-19 00:48:07,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 770 transitions. [2024-11-19 00:48:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:48:07,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:07,103 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:07,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:48:07,103 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:07,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1349635465, now seen corresponding path program 1 times [2024-11-19 00:48:07,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:07,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563011589] [2024-11-19 00:48:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:07,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563011589] [2024-11-19 00:48:07,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563011589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:07,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:07,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:48:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712826990] [2024-11-19 00:48:07,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:07,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:48:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:48:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:48:07,349 INFO L87 Difference]: Start difference. First operand 565 states and 770 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:07,564 INFO L93 Difference]: Finished difference Result 1092 states and 1504 transitions. [2024-11-19 00:48:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:48:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-19 00:48:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:07,567 INFO L225 Difference]: With dead ends: 1092 [2024-11-19 00:48:07,567 INFO L226 Difference]: Without dead ends: 622 [2024-11-19 00:48:07,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:48:07,568 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 130 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:07,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 358 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:48:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-19 00:48:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 568. [2024-11-19 00:48:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 477 states have (on average 1.2767295597484276) internal successors, (609), 481 states have internal predecessors, (609), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:48:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 769 transitions. [2024-11-19 00:48:07,607 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 769 transitions. Word has length 138 [2024-11-19 00:48:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:07,608 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 769 transitions. [2024-11-19 00:48:07,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 769 transitions. [2024-11-19 00:48:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:48:07,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:07,609 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:07,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 00:48:07,609 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:07,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -669577095, now seen corresponding path program 1 times [2024-11-19 00:48:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920750243] [2024-11-19 00:48:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:07,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:07,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920750243] [2024-11-19 00:48:07,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920750243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:07,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:07,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:48:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025917294] [2024-11-19 00:48:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:07,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:48:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:48:07,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:48:07,898 INFO L87 Difference]: Start difference. First operand 568 states and 769 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:08,113 INFO L93 Difference]: Finished difference Result 1156 states and 1567 transitions. [2024-11-19 00:48:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:48:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-19 00:48:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:08,117 INFO L225 Difference]: With dead ends: 1156 [2024-11-19 00:48:08,117 INFO L226 Difference]: Without dead ends: 691 [2024-11-19 00:48:08,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:48:08,118 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 109 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:08,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 782 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:48:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-19 00:48:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 480. [2024-11-19 00:48:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 401 states have (on average 1.2668329177057356) internal successors, (508), 402 states have internal predecessors, (508), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 644 transitions. [2024-11-19 00:48:08,153 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 644 transitions. Word has length 138 [2024-11-19 00:48:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:08,154 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 644 transitions. [2024-11-19 00:48:08,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 644 transitions. [2024-11-19 00:48:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 00:48:08,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:08,155 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:08,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 00:48:08,155 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:08,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1941985744, now seen corresponding path program 1 times [2024-11-19 00:48:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:08,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413305135] [2024-11-19 00:48:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413305135] [2024-11-19 00:48:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413305135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:08,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:08,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:48:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991281185] [2024-11-19 00:48:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:08,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:48:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:48:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:08,198 INFO L87 Difference]: Start difference. First operand 480 states and 644 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:08,234 INFO L93 Difference]: Finished difference Result 865 states and 1176 transitions. [2024-11-19 00:48:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:48:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-11-19 00:48:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:08,236 INFO L225 Difference]: With dead ends: 865 [2024-11-19 00:48:08,236 INFO L226 Difference]: Without dead ends: 484 [2024-11-19 00:48:08,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:08,238 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:08,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-19 00:48:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2024-11-19 00:48:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 405 states have (on average 1.2641975308641975) internal successors, (512), 406 states have internal predecessors, (512), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 648 transitions. [2024-11-19 00:48:08,271 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 648 transitions. Word has length 140 [2024-11-19 00:48:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:08,271 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 648 transitions. [2024-11-19 00:48:08,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 648 transitions. [2024-11-19 00:48:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 00:48:08,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:08,272 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:08,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 00:48:08,273 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:08,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1543634926, now seen corresponding path program 1 times [2024-11-19 00:48:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:08,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967614278] [2024-11-19 00:48:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-19 00:48:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967614278] [2024-11-19 00:48:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967614278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003839991] [2024-11-19 00:48:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:08,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:08,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:08,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:48:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:08,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 00:48:08,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:08,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:48:08,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003839991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:08,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:48:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2024-11-19 00:48:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979795108] [2024-11-19 00:48:08,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:08,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:48:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:48:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:48:08,620 INFO L87 Difference]: Start difference. First operand 484 states and 648 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:08,672 INFO L93 Difference]: Finished difference Result 501 states and 667 transitions. [2024-11-19 00:48:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:48:08,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-11-19 00:48:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:08,675 INFO L225 Difference]: With dead ends: 501 [2024-11-19 00:48:08,675 INFO L226 Difference]: Without dead ends: 499 [2024-11-19 00:48:08,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:48:08,676 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:08,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-19 00:48:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2024-11-19 00:48:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 421 states have internal predecessors, (527), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 663 transitions. [2024-11-19 00:48:08,711 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 663 transitions. Word has length 140 [2024-11-19 00:48:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:08,712 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 663 transitions. [2024-11-19 00:48:08,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 663 transitions. [2024-11-19 00:48:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:48:08,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:08,713 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:08,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 00:48:08,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 00:48:08,913 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:08,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1924751351, now seen corresponding path program 1 times [2024-11-19 00:48:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505571806] [2024-11-19 00:48:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-19 00:48:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505571806] [2024-11-19 00:48:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505571806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631290206] [2024-11-19 00:48:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:09,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:09,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:09,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:48:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:09,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 00:48:09,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:48:09,300 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:48:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631290206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:48:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-19 00:48:09,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131518214] [2024-11-19 00:48:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:09,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:48:09,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:48:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:48:09,301 INFO L87 Difference]: Start difference. First operand 499 states and 663 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:09,364 INFO L93 Difference]: Finished difference Result 519 states and 685 transitions. [2024-11-19 00:48:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:48:09,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2024-11-19 00:48:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:09,368 INFO L225 Difference]: With dead ends: 519 [2024-11-19 00:48:09,368 INFO L226 Difference]: Without dead ends: 517 [2024-11-19 00:48:09,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:48:09,370 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:09,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 749 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-19 00:48:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 502. [2024-11-19 00:48:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 423 states have (on average 1.2529550827423168) internal successors, (530), 424 states have internal predecessors, (530), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 666 transitions. [2024-11-19 00:48:09,406 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 666 transitions. Word has length 142 [2024-11-19 00:48:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:09,407 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 666 transitions. [2024-11-19 00:48:09,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 666 transitions. [2024-11-19 00:48:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-19 00:48:09,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:09,409 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:09,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 00:48:09,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 00:48:09,610 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:09,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:09,611 INFO L85 PathProgramCache]: Analyzing trace with hash 746538535, now seen corresponding path program 1 times [2024-11-19 00:48:09,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:09,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45474617] [2024-11-19 00:48:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:09,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-19 00:48:09,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:09,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45474617] [2024-11-19 00:48:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45474617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:09,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135097784] [2024-11-19 00:48:09,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:09,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:09,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:09,793 INFO L87 Difference]: Start difference. First operand 502 states and 666 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:09,885 INFO L93 Difference]: Finished difference Result 818 states and 1097 transitions. [2024-11-19 00:48:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:48:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-19 00:48:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:09,888 INFO L225 Difference]: With dead ends: 818 [2024-11-19 00:48:09,888 INFO L226 Difference]: Without dead ends: 546 [2024-11-19 00:48:09,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:09,889 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 35 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:09,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 470 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:48:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-19 00:48:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 502. [2024-11-19 00:48:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 423 states have (on average 1.2529550827423168) internal successors, (530), 424 states have internal predecessors, (530), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 666 transitions. [2024-11-19 00:48:09,922 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 666 transitions. Word has length 268 [2024-11-19 00:48:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:09,922 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 666 transitions. [2024-11-19 00:48:09,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 666 transitions. [2024-11-19 00:48:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-19 00:48:09,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:09,924 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:09,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 00:48:09,925 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:09,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash 324645603, now seen corresponding path program 1 times [2024-11-19 00:48:09,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:09,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877895444] [2024-11-19 00:48:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-19 00:48:10,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:10,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877895444] [2024-11-19 00:48:10,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877895444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:10,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:10,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851101198] [2024-11-19 00:48:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:10,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:10,091 INFO L87 Difference]: Start difference. First operand 502 states and 666 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:10,188 INFO L93 Difference]: Finished difference Result 818 states and 1097 transitions. [2024-11-19 00:48:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:48:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-19 00:48:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:10,191 INFO L225 Difference]: With dead ends: 818 [2024-11-19 00:48:10,191 INFO L226 Difference]: Without dead ends: 546 [2024-11-19 00:48:10,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:10,192 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 33 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:10,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 459 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:48:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-19 00:48:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 505. [2024-11-19 00:48:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 426 states have (on average 1.2511737089201878) internal successors, (533), 427 states have internal predecessors, (533), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 00:48:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 669 transitions. [2024-11-19 00:48:10,253 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 669 transitions. Word has length 268 [2024-11-19 00:48:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:10,253 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 669 transitions. [2024-11-19 00:48:10,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 669 transitions. [2024-11-19 00:48:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-19 00:48:10,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:10,256 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:10,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 00:48:10,257 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:10,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1004703973, now seen corresponding path program 1 times [2024-11-19 00:48:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:10,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553508393] [2024-11-19 00:48:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:10,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 2548 trivial. 0 not checked. [2024-11-19 00:48:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553508393] [2024-11-19 00:48:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553508393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329078573] [2024-11-19 00:48:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:10,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:10,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 00:48:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:11,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 00:48:11,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:12,454 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 15 treesize of output 1 [2024-11-19 00:48:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:12,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2024-11-19 00:48:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 744 refuted. 0 times theorem prover too weak. 1826 trivial. 0 not checked. [2024-11-19 00:48:12,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:48:12,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 00:48:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329078573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:12,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:48:12,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-19 00:48:12,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704616705] [2024-11-19 00:48:12,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:48:12,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:48:12,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:48:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:48:12,749 INFO L87 Difference]: Start difference. First operand 505 states and 669 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-11-19 00:48:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:13,059 INFO L93 Difference]: Finished difference Result 1146 states and 1530 transitions. [2024-11-19 00:48:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:48:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 268 [2024-11-19 00:48:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:13,063 INFO L225 Difference]: With dead ends: 1146 [2024-11-19 00:48:13,064 INFO L226 Difference]: Without dead ends: 741 [2024-11-19 00:48:13,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:48:13,065 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 191 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:13,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 516 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:48:13,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-19 00:48:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 736. [2024-11-19 00:48:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 615 states have (on average 1.2373983739837398) internal successors, (761), 619 states have internal predecessors, (761), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 969 transitions. [2024-11-19 00:48:13,120 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 969 transitions. Word has length 268 [2024-11-19 00:48:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:13,121 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 969 transitions. [2024-11-19 00:48:13,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-11-19 00:48:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 969 transitions. [2024-11-19 00:48:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-19 00:48:13,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:13,123 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:13,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 00:48:13,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:13,327 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:13,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -68381407, now seen corresponding path program 1 times [2024-11-19 00:48:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:13,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161407650] [2024-11-19 00:48:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-19 00:48:13,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:13,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161407650] [2024-11-19 00:48:13,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161407650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:48:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048929845] [2024-11-19 00:48:13,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:13,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:48:13,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:48:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:48:13,516 INFO L87 Difference]: Start difference. First operand 736 states and 969 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:13,656 INFO L93 Difference]: Finished difference Result 1161 states and 1536 transitions. [2024-11-19 00:48:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:48:13,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-19 00:48:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:13,661 INFO L225 Difference]: With dead ends: 1161 [2024-11-19 00:48:13,661 INFO L226 Difference]: Without dead ends: 729 [2024-11-19 00:48:13,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:48:13,663 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 31 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:13,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 499 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:48:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-19 00:48:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 724. [2024-11-19 00:48:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 603 states have (on average 1.2271973466003316) internal successors, (740), 607 states have internal predecessors, (740), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 948 transitions. [2024-11-19 00:48:13,717 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 948 transitions. Word has length 268 [2024-11-19 00:48:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:13,718 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 948 transitions. [2024-11-19 00:48:13,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 948 transitions. [2024-11-19 00:48:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-19 00:48:13,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:13,720 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:13,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 00:48:13,720 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:13,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash 67570773, now seen corresponding path program 1 times [2024-11-19 00:48:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7053194] [2024-11-19 00:48:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-11-19 00:48:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7053194] [2024-11-19 00:48:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7053194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:13,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:13,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:13,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011020739] [2024-11-19 00:48:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:13,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:13,842 INFO L87 Difference]: Start difference. First operand 724 states and 948 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:13,930 INFO L93 Difference]: Finished difference Result 1437 states and 1879 transitions. [2024-11-19 00:48:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:48:13,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-11-19 00:48:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:13,934 INFO L225 Difference]: With dead ends: 1437 [2024-11-19 00:48:13,935 INFO L226 Difference]: Without dead ends: 813 [2024-11-19 00:48:13,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:48:13,936 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 44 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:13,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 370 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-19 00:48:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 703. [2024-11-19 00:48:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 582 states have (on average 1.2147766323024054) internal successors, (707), 586 states have internal predecessors, (707), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 915 transitions. [2024-11-19 00:48:13,992 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 915 transitions. Word has length 270 [2024-11-19 00:48:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:13,993 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 915 transitions. [2024-11-19 00:48:13,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 915 transitions. [2024-11-19 00:48:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-19 00:48:13,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:13,995 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:13,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 00:48:13,995 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:13,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -354322159, now seen corresponding path program 1 times [2024-11-19 00:48:13,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:13,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911364013] [2024-11-19 00:48:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:13,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-11-19 00:48:14,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911364013] [2024-11-19 00:48:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911364013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:14,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:14,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651171009] [2024-11-19 00:48:14,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:14,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:14,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:14,176 INFO L87 Difference]: Start difference. First operand 703 states and 915 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:14,277 INFO L93 Difference]: Finished difference Result 1296 states and 1692 transitions. [2024-11-19 00:48:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:48:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-11-19 00:48:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:14,280 INFO L225 Difference]: With dead ends: 1296 [2024-11-19 00:48:14,280 INFO L226 Difference]: Without dead ends: 693 [2024-11-19 00:48:14,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:14,282 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 28 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:14,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 509 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-19 00:48:14,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-19 00:48:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 570 states have (on average 1.194736842105263) internal successors, (681), 574 states have internal predecessors, (681), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 889 transitions. [2024-11-19 00:48:14,337 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 889 transitions. Word has length 270 [2024-11-19 00:48:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:14,337 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 889 transitions. [2024-11-19 00:48:14,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 889 transitions. [2024-11-19 00:48:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-19 00:48:14,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:14,339 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:14,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 00:48:14,339 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:14,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:14,339 INFO L85 PathProgramCache]: Analyzing trace with hash 539498296, now seen corresponding path program 1 times [2024-11-19 00:48:14,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:14,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403282685] [2024-11-19 00:48:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:14,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:48:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510189214] [2024-11-19 00:48:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:14,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:14,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:14,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 00:48:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:14,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 00:48:14,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:17,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 00:48:17,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 00:48:18,326 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-19 00:48:18,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-19 00:48:18,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 00:48:18,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 00:48:20,146 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 15 treesize of output 1 [2024-11-19 00:48:20,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:20,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 46 [2024-11-19 00:48:20,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2024-11-19 00:48:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:21,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:48:21,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-19 00:48:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 6 proven. 1634 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2024-11-19 00:48:21,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:48:21,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-11-19 00:48:21,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-19 00:48:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403282685] [2024-11-19 00:48:25,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:48:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510189214] [2024-11-19 00:48:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510189214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:25,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:48:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-19 00:48:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789200702] [2024-11-19 00:48:25,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:48:25,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:48:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:48:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-11-19 00:48:25,544 INFO L87 Difference]: Start difference. First operand 691 states and 889 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-19 00:48:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:27,003 INFO L93 Difference]: Finished difference Result 1675 states and 2150 transitions. [2024-11-19 00:48:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:48:27,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 271 [2024-11-19 00:48:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:27,008 INFO L225 Difference]: With dead ends: 1675 [2024-11-19 00:48:27,008 INFO L226 Difference]: Without dead ends: 1084 [2024-11-19 00:48:27,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=118, Invalid=301, Unknown=1, NotChecked=0, Total=420 [2024-11-19 00:48:27,010 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 238 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:27,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 541 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:48:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2024-11-19 00:48:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 775. [2024-11-19 00:48:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 654 states have (on average 1.2003058103975535) internal successors, (785), 658 states have internal predecessors, (785), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 993 transitions. [2024-11-19 00:48:27,088 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 993 transitions. Word has length 271 [2024-11-19 00:48:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:27,089 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 993 transitions. [2024-11-19 00:48:27,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-19 00:48:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 993 transitions. [2024-11-19 00:48:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-19 00:48:27,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:27,090 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:27,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 00:48:27,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:27,291 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:27,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash -483096033, now seen corresponding path program 1 times [2024-11-19 00:48:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671679582] [2024-11-19 00:48:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:27,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-11-19 00:48:27,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671679582] [2024-11-19 00:48:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671679582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:27,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:27,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:48:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108714540] [2024-11-19 00:48:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:27,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:48:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:48:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:48:27,466 INFO L87 Difference]: Start difference. First operand 775 states and 993 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:27,601 INFO L93 Difference]: Finished difference Result 1290 states and 1649 transitions. [2024-11-19 00:48:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:48:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2024-11-19 00:48:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:27,605 INFO L225 Difference]: With dead ends: 1290 [2024-11-19 00:48:27,605 INFO L226 Difference]: Without dead ends: 888 [2024-11-19 00:48:27,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:48:27,607 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:27,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 606 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:48:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2024-11-19 00:48:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 750. [2024-11-19 00:48:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 629 states have (on average 1.1844197138314785) internal successors, (745), 633 states have internal predecessors, (745), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 953 transitions. [2024-11-19 00:48:27,674 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 953 transitions. Word has length 271 [2024-11-19 00:48:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:27,676 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 953 transitions. [2024-11-19 00:48:27,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 953 transitions. [2024-11-19 00:48:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 00:48:27,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:27,678 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:27,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 00:48:27,679 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:27,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash 680367868, now seen corresponding path program 1 times [2024-11-19 00:48:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886175537] [2024-11-19 00:48:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:48:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319837909] [2024-11-19 00:48:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:27,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:27,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:27,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:27,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 00:48:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:28,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-19 00:48:28,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:30,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 00:48:31,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 00:48:31,708 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-19 00:48:31,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-19 00:48:32,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 00:48:32,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 00:48:33,394 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 15 treesize of output 1 [2024-11-19 00:48:33,592 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 15 treesize of output 1 [2024-11-19 00:48:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:34,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 44 [2024-11-19 00:48:34,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2024-11-19 00:48:34,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:48:34,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-11-19 00:48:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 6 proven. 1634 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2024-11-19 00:48:34,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:48:34,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-11-19 00:48:34,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-11-19 00:48:38,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:38,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886175537] [2024-11-19 00:48:38,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:48:38,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319837909] [2024-11-19 00:48:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319837909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:38,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:48:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-19 00:48:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249609747] [2024-11-19 00:48:38,657 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:48:38,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:48:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:48:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-11-19 00:48:38,658 INFO L87 Difference]: Start difference. First operand 750 states and 953 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-19 00:48:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:40,153 INFO L93 Difference]: Finished difference Result 1672 states and 2109 transitions. [2024-11-19 00:48:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:48:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 272 [2024-11-19 00:48:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:40,158 INFO L225 Difference]: With dead ends: 1672 [2024-11-19 00:48:40,159 INFO L226 Difference]: Without dead ends: 1022 [2024-11-19 00:48:40,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=118, Invalid=301, Unknown=1, NotChecked=0, Total=420 [2024-11-19 00:48:40,160 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 234 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:40,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 468 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 00:48:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-11-19 00:48:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 774. [2024-11-19 00:48:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 653 states have (on average 1.1791730474732005) internal successors, (770), 657 states have internal predecessors, (770), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-19 00:48:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 978 transitions. [2024-11-19 00:48:40,238 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 978 transitions. Word has length 272 [2024-11-19 00:48:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:40,239 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 978 transitions. [2024-11-19 00:48:40,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-19 00:48:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 978 transitions. [2024-11-19 00:48:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 00:48:40,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:40,240 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:40,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 00:48:40,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 00:48:40,441 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:40,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 482079634, now seen corresponding path program 1 times [2024-11-19 00:48:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:40,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527262275] [2024-11-19 00:48:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:40,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2554 trivial. 0 not checked. [2024-11-19 00:48:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527262275] [2024-11-19 00:48:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527262275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120660191] [2024-11-19 00:48:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:42,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:42,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:42,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:42,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 00:48:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:42,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-19 00:48:42,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:44,685 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 15 treesize of output 1 [2024-11-19 00:48:44,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-19 00:48:45,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:45,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:48:45,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 78 [2024-11-19 00:48:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 367 proven. 256 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2024-11-19 00:48:46,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:48:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120660191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:48:47,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:48:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27] total 38 [2024-11-19 00:48:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812862148] [2024-11-19 00:48:47,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:48:47,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 00:48:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 00:48:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=2027, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 00:48:47,563 INFO L87 Difference]: Start difference. First operand 774 states and 978 transitions. Second operand has 38 states, 33 states have (on average 5.121212121212121) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-19 00:48:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:51,146 INFO L93 Difference]: Finished difference Result 1144 states and 1408 transitions. [2024-11-19 00:48:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 00:48:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 5.121212121212121) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 272 [2024-11-19 00:48:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:51,151 INFO L225 Difference]: With dead ends: 1144 [2024-11-19 00:48:51,151 INFO L226 Difference]: Without dead ends: 1142 [2024-11-19 00:48:51,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 274 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1566, Invalid=5406, Unknown=0, NotChecked=0, Total=6972 [2024-11-19 00:48:51,153 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 605 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:51,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2418 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 00:48:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-11-19 00:48:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 770. [2024-11-19 00:48:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 669 states have (on average 1.1808669656203288) internal successors, (790), 671 states have internal predecessors, (790), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 946 transitions. [2024-11-19 00:48:51,236 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 946 transitions. Word has length 272 [2024-11-19 00:48:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:51,237 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 946 transitions. [2024-11-19 00:48:51,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 5.121212121212121) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-19 00:48:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 946 transitions. [2024-11-19 00:48:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-19 00:48:51,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:51,239 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:51,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 00:48:51,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 00:48:51,440 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:51,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1049038144, now seen corresponding path program 1 times [2024-11-19 00:48:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:51,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543617210] [2024-11-19 00:48:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-19 00:48:51,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:51,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543617210] [2024-11-19 00:48:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543617210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:51,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:51,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:48:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973394721] [2024-11-19 00:48:51,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:51,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:48:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:48:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:51,526 INFO L87 Difference]: Start difference. First operand 770 states and 946 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:51,641 INFO L93 Difference]: Finished difference Result 1448 states and 1783 transitions. [2024-11-19 00:48:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:48:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 274 [2024-11-19 00:48:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:51,645 INFO L225 Difference]: With dead ends: 1448 [2024-11-19 00:48:51,646 INFO L226 Difference]: Without dead ends: 790 [2024-11-19 00:48:51,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:51,648 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:51,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 182 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2024-11-19 00:48:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 734. [2024-11-19 00:48:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 633 states have (on average 1.1785150078988942) internal successors, (746), 635 states have internal predecessors, (746), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 902 transitions. [2024-11-19 00:48:51,726 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 902 transitions. Word has length 274 [2024-11-19 00:48:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:51,727 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 902 transitions. [2024-11-19 00:48:51,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 902 transitions. [2024-11-19 00:48:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-19 00:48:51,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:51,728 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:51,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 00:48:51,729 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:51,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -823590893, now seen corresponding path program 1 times [2024-11-19 00:48:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705605867] [2024-11-19 00:48:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2582 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-19 00:48:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705605867] [2024-11-19 00:48:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705605867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:51,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:48:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183546914] [2024-11-19 00:48:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:51,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:48:51,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:48:51,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:51,809 INFO L87 Difference]: Start difference. First operand 734 states and 902 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:51,938 INFO L93 Difference]: Finished difference Result 1059 states and 1311 transitions. [2024-11-19 00:48:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:48:51,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 277 [2024-11-19 00:48:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:51,942 INFO L225 Difference]: With dead ends: 1059 [2024-11-19 00:48:51,943 INFO L226 Difference]: Without dead ends: 754 [2024-11-19 00:48:51,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:51,944 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:51,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 222 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-19 00:48:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 734. [2024-11-19 00:48:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 633 states have (on average 1.1753554502369667) internal successors, (744), 635 states have internal predecessors, (744), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 900 transitions. [2024-11-19 00:48:52,025 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 900 transitions. Word has length 277 [2024-11-19 00:48:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:52,025 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 900 transitions. [2024-11-19 00:48:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 900 transitions. [2024-11-19 00:48:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-19 00:48:52,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:52,027 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:52,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 00:48:52,027 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:52,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 837963173, now seen corresponding path program 1 times [2024-11-19 00:48:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306823724] [2024-11-19 00:48:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-19 00:48:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306823724] [2024-11-19 00:48:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306823724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:52,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12735652] [2024-11-19 00:48:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:52,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:52,305 INFO L87 Difference]: Start difference. First operand 734 states and 900 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:52,421 INFO L93 Difference]: Finished difference Result 1687 states and 2071 transitions. [2024-11-19 00:48:52,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:48:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-11-19 00:48:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:52,425 INFO L225 Difference]: With dead ends: 1687 [2024-11-19 00:48:52,425 INFO L226 Difference]: Without dead ends: 1063 [2024-11-19 00:48:52,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:48:52,426 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 34 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:52,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 424 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-19 00:48:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 991. [2024-11-19 00:48:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 890 states have (on average 1.1842696629213483) internal successors, (1054), 892 states have internal predecessors, (1054), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1210 transitions. [2024-11-19 00:48:52,511 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1210 transitions. Word has length 279 [2024-11-19 00:48:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:52,512 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1210 transitions. [2024-11-19 00:48:52,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1210 transitions. [2024-11-19 00:48:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-19 00:48:52,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:52,514 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:52,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 00:48:52,514 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:52,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:52,515 INFO L85 PathProgramCache]: Analyzing trace with hash 444936163, now seen corresponding path program 1 times [2024-11-19 00:48:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100087530] [2024-11-19 00:48:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2024-11-19 00:48:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:52,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100087530] [2024-11-19 00:48:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100087530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:48:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114564821] [2024-11-19 00:48:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:52,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:48:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:52,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:48:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:48:52,772 INFO L87 Difference]: Start difference. First operand 991 states and 1210 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:52,881 INFO L93 Difference]: Finished difference Result 2068 states and 2526 transitions. [2024-11-19 00:48:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:48:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-11-19 00:48:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:52,886 INFO L225 Difference]: With dead ends: 2068 [2024-11-19 00:48:52,886 INFO L226 Difference]: Without dead ends: 1227 [2024-11-19 00:48:52,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:48:52,888 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:52,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 324 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-19 00:48:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1160. [2024-11-19 00:48:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1059 states have (on average 1.1869688385269122) internal successors, (1257), 1061 states have internal predecessors, (1257), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1413 transitions. [2024-11-19 00:48:52,970 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1413 transitions. Word has length 279 [2024-11-19 00:48:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:52,970 INFO L471 AbstractCegarLoop]: Abstraction has 1160 states and 1413 transitions. [2024-11-19 00:48:52,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1413 transitions. [2024-11-19 00:48:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 00:48:52,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:52,972 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:52,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 00:48:52,972 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:52,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1001206121, now seen corresponding path program 1 times [2024-11-19 00:48:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508513675] [2024-11-19 00:48:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:52,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-11-19 00:48:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508513675] [2024-11-19 00:48:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508513675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:53,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:48:53,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022079243] [2024-11-19 00:48:53,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:53,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:48:53,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:48:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:53,041 INFO L87 Difference]: Start difference. First operand 1160 states and 1413 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:53,149 INFO L93 Difference]: Finished difference Result 2365 states and 2908 transitions. [2024-11-19 00:48:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:48:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-11-19 00:48:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:53,154 INFO L225 Difference]: With dead ends: 2365 [2024-11-19 00:48:53,154 INFO L226 Difference]: Without dead ends: 1368 [2024-11-19 00:48:53,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:48:53,157 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 26 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:53,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 235 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:48:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-19 00:48:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1277. [2024-11-19 00:48:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1176 states have (on average 1.2125850340136055) internal successors, (1426), 1178 states have internal predecessors, (1426), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1582 transitions. [2024-11-19 00:48:53,259 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1582 transitions. Word has length 280 [2024-11-19 00:48:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:53,259 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 1582 transitions. [2024-11-19 00:48:53,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1582 transitions. [2024-11-19 00:48:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 00:48:53,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:53,261 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:53,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 00:48:53,261 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:53,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 406843289, now seen corresponding path program 1 times [2024-11-19 00:48:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:53,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408448717] [2024-11-19 00:48:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:53,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-11-19 00:48:53,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:48:53,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408448717] [2024-11-19 00:48:53,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408448717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:48:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:48:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 00:48:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279280794] [2024-11-19 00:48:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:48:53,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:48:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:48:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:48:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:48:53,574 INFO L87 Difference]: Start difference. First operand 1277 states and 1582 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:48:53,881 INFO L93 Difference]: Finished difference Result 1317 states and 1624 transitions. [2024-11-19 00:48:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 00:48:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-11-19 00:48:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:48:53,886 INFO L225 Difference]: With dead ends: 1317 [2024-11-19 00:48:53,886 INFO L226 Difference]: Without dead ends: 1315 [2024-11-19 00:48:53,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:48:53,887 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 28 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:48:53,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 927 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:48:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-11-19 00:48:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1271. [2024-11-19 00:48:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1170 states have (on average 1.2136752136752136) internal successors, (1420), 1172 states have internal predecessors, (1420), 78 states have call successors, (78), 22 states have call predecessors, (78), 22 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-19 00:48:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1576 transitions. [2024-11-19 00:48:53,993 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1576 transitions. Word has length 280 [2024-11-19 00:48:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:48:53,993 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 1576 transitions. [2024-11-19 00:48:53,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:48:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1576 transitions. [2024-11-19 00:48:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-19 00:48:53,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:48:53,998 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:48:53,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 00:48:53,998 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:48:53,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:48:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 722866452, now seen corresponding path program 1 times [2024-11-19 00:48:53,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:48:53,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780004699] [2024-11-19 00:48:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:48:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:48:54,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276850697] [2024-11-19 00:48:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:48:54,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:48:54,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:48:54,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:48:54,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 00:48:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:48:54,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-19 00:48:54,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:48:58,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-19 00:48:58,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-19 00:49:00,310 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 15 treesize of output 1 [2024-11-19 00:49:02,126 INFO L349 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2024-11-19 00:49:02,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2024-11-19 00:49:04,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15