./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s5if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/array-fpi/s5if.c -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 b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:57:23,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:57:23,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:57:23,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:57:23,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:57:23,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:57:23,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:57:23,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:57:23,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:57:23,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:57:23,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:57:23,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:57:23,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:57:23,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:57:23,399 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:57:23,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:57:23,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:57:23,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:57:23,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:57:23,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:57:23,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:57:23,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:57:23,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:57:23,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:57:23,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:57:23,404 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:57:23,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:57:23,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:57:23,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:57:23,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:57:23,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:57:23,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:57:23,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:57:23,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:57:23,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:57:23,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:57:23,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:57:23,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:57:23,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:57:23,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:57:23,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:57:23,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:57:23,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d [2024-11-16 02:57:23,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:57:23,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:57:23,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:57:23,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:57:23,685 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:57:23,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s5if.c [2024-11-16 02:57:25,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:57:25,281 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:57:25,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s5if.c [2024-11-16 02:57:25,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638207fd7/e7c25097e58e4dd79c97f63403946883/FLAG40ec7ab37 [2024-11-16 02:57:25,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638207fd7/e7c25097e58e4dd79c97f63403946883 [2024-11-16 02:57:25,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:57:25,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:57:25,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:57:25,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:57:25,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:57:25,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9cb3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25, skipping insertion in model container [2024-11-16 02:57:25,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:57:25,591 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/array-fpi/s5if.c[587,600] [2024-11-16 02:57:25,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:57:25,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:57:25,652 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/array-fpi/s5if.c[587,600] [2024-11-16 02:57:25,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:57:25,684 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:57:25,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25 WrapperNode [2024-11-16 02:57:25,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:57:25,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:57:25,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:57:25,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:57:25,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,714 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-11-16 02:57:25,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:57:25,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:57:25,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:57:25,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:57:25,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,741 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 6, 4]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 3, 1]. [2024-11-16 02:57:25,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,758 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:57:25,767 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:57:25,767 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:57:25,767 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:57:25,768 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (1/1) ... [2024-11-16 02:57:25,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:57:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:25,812 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) [2024-11-16 02:57:25,820 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 [2024-11-16 02:57:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:57:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:57:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:57:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:57:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:57:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:57:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:57:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:57:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:57:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:57:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:57:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:57:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:57:25,974 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:57:25,977 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:57:26,123 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-16 02:57:26,130 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 02:57:26,131 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:57:26,143 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:57:26,143 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:57:26,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:57:26 BoogieIcfgContainer [2024-11-16 02:57:26,144 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:57:26,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:57:26,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:57:26,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:57:26,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:57:25" (1/3) ... [2024-11-16 02:57:26,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:57:26, skipping insertion in model container [2024-11-16 02:57:26,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:25" (2/3) ... [2024-11-16 02:57:26,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:57:26, skipping insertion in model container [2024-11-16 02:57:26,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:57:26" (3/3) ... [2024-11-16 02:57:26,155 INFO L112 eAbstractionObserver]: Analyzing ICFG s5if.c [2024-11-16 02:57:26,169 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:57:26,169 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:57:26,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:57:26,230 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;@22a6525, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:57:26,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:57:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 02:57:26,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:26,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:26,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:26,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2136143925, now seen corresponding path program 1 times [2024-11-16 02:57:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811344957] [2024-11-16 02:57:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811344957] [2024-11-16 02:57:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811344957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:57:26,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:57:26,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:57:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320302529] [2024-11-16 02:57:26,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:57:26,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:57:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:57:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:57:26,467 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:26,481 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-11-16 02:57:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:57:26,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-16 02:57:26,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:26,491 INFO L225 Difference]: With dead ends: 39 [2024-11-16 02:57:26,491 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 02:57:26,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:57:26,496 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-16 02:57:26,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:57:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 02:57:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 02:57:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-16 02:57:26,520 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2024-11-16 02:57:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:26,520 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-16 02:57:26,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-16 02:57:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:57:26,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:26,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:26,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:57:26,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:26,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 164193969, now seen corresponding path program 1 times [2024-11-16 02:57:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426221381] [2024-11-16 02:57:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426221381] [2024-11-16 02:57:26,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426221381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:57:26,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:57:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:57:26,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764884795] [2024-11-16 02:57:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:57:26,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:57:26,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:57:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:57:26,700 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:26,745 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-16 02:57:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:57:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-16 02:57:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:26,746 INFO L225 Difference]: With dead ends: 33 [2024-11-16 02:57:26,746 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 02:57:26,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:57:26,748 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:26,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:57:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 02:57:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-16 02:57:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-16 02:57:26,755 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2024-11-16 02:57:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:26,756 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-16 02:57:26,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-16 02:57:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:57:26,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:26,758 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:26,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:57:26,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:26,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1719376912, now seen corresponding path program 1 times [2024-11-16 02:57:26,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:26,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558674697] [2024-11-16 02:57:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558674697] [2024-11-16 02:57:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558674697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334664967] [2024-11-16 02:57:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:27,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:27,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:27,534 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) [2024-11-16 02:57:27,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:57:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:27,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:57:27,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:27,698 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 11 treesize of output 7 [2024-11-16 02:57:27,875 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:27,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334664967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:28,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-16 02:57:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570013351] [2024-11-16 02:57:28,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:28,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:57:28,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:57:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:57:28,095 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:28,383 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-16 02:57:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-16 02:57:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:28,385 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:57:28,385 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:57:28,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:57:28,387 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:28,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 78 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:57:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:57:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-11-16 02:57:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 02:57:28,398 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2024-11-16 02:57:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:28,398 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 02:57:28,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 02:57:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:57:28,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:28,400 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:28,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:57:28,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:28,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:28,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 23433423, now seen corresponding path program 1 times [2024-11-16 02:57:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100763159] [2024-11-16 02:57:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:28,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100763159] [2024-11-16 02:57:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100763159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:28,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051078724] [2024-11-16 02:57:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:28,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:28,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:28,827 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) [2024-11-16 02:57:28,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:57:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:28,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:57:28,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:28,903 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 11 treesize of output 7 [2024-11-16 02:57:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:28,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:28,972 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 14 treesize of output 12 [2024-11-16 02:57:28,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 12 [2024-11-16 02:57:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:28,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051078724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:28,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 02:57:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930075540] [2024-11-16 02:57:28,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:28,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:57:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:57:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:57:28,988 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:29,040 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-16 02:57:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:57:29,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-16 02:57:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:29,042 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:57:29,042 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:57:29,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:57:29,043 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:29,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 72 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:57:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:57:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-16 02:57:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-16 02:57:29,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2024-11-16 02:57:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:29,053 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-16 02:57:29,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-16 02:57:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:57:29,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:29,055 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:29,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:57:29,257 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,SelfDestructingSolverStorable3 [2024-11-16 02:57:29,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:29,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1841783055, now seen corresponding path program 2 times [2024-11-16 02:57:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769807600] [2024-11-16 02:57:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:29,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769807600] [2024-11-16 02:57:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769807600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:29,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758177081] [2024-11-16 02:57:29,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:29,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:29,340 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) [2024-11-16 02:57:29,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:57:29,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:29,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:29,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:57:29,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:29,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:29,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758177081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:29,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:29,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:57:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713343069] [2024-11-16 02:57:29,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:29,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:57:29,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:57:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:57:29,520 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:29,624 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-16 02:57:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:57:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:57:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:29,625 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:57:29,625 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:57:29,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:57:29,626 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:29,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 59 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:57:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2024-11-16 02:57:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-16 02:57:29,631 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2024-11-16 02:57:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:29,631 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-16 02:57:29,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-16 02:57:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:57:29,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:29,632 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:29,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:57:29,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:29,833 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:29,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1645716078, now seen corresponding path program 3 times [2024-11-16 02:57:29,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:29,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781502311] [2024-11-16 02:57:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781502311] [2024-11-16 02:57:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781502311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11555847] [2024-11-16 02:57:29,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:29,915 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) [2024-11-16 02:57:29,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:57:29,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:57:29,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:29,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:57:29,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:30,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11555847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:30,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:57:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848002358] [2024-11-16 02:57:30,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:30,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:57:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:57:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:57:30,083 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:30,146 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-16 02:57:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:57:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 02:57:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:30,147 INFO L225 Difference]: With dead ends: 45 [2024-11-16 02:57:30,147 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 02:57:30,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:57:30,148 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:30,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 02:57:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-16 02:57:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-16 02:57:30,153 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-16 02:57:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:30,153 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-16 02:57:30,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-16 02:57:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:57:30,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:30,154 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:30,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:57:30,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:30,355 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:30,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 541357295, now seen corresponding path program 4 times [2024-11-16 02:57:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537172379] [2024-11-16 02:57:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:30,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537172379] [2024-11-16 02:57:30,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537172379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091828754] [2024-11-16 02:57:30,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:57:30,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:30,869 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) [2024-11-16 02:57:30,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:57:30,933 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:57:30,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:30,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:57:30,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:30,944 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 11 treesize of output 7 [2024-11-16 02:57:31,110 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:31,323 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:57:31,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-16 02:57:31,332 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:31,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:31,687 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:57:31,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-16 02:57:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091828754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:32,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:32,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-16 02:57:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679968080] [2024-11-16 02:57:32,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:32,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:57:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:57:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:57:32,017 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:33,153 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-11-16 02:57:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:57:33,154 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 02:57:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:33,155 INFO L225 Difference]: With dead ends: 70 [2024-11-16 02:57:33,156 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 02:57:33,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=347, Invalid=2103, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:57:33,157 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:33,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 188 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:57:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 02:57:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2024-11-16 02:57:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-16 02:57:33,167 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 26 [2024-11-16 02:57:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:33,167 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-16 02:57:33,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-16 02:57:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:57:33,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:33,168 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:33,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:57:33,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:33,369 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:33,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:33,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2010799666, now seen corresponding path program 1 times [2024-11-16 02:57:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:33,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393597007] [2024-11-16 02:57:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:33,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:33,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393597007] [2024-11-16 02:57:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393597007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617968635] [2024-11-16 02:57:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:33,587 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) [2024-11-16 02:57:33,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:57:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:33,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:57:33,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:33,677 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 11 treesize of output 7 [2024-11-16 02:57:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:33,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:33,794 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 16 treesize of output 14 [2024-11-16 02:57:33,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-16 02:57:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:33,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617968635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:33,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-16 02:57:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166188365] [2024-11-16 02:57:33,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:33,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:33,824 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:33,901 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2024-11-16 02:57:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:57:33,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 02:57:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:33,907 INFO L225 Difference]: With dead ends: 79 [2024-11-16 02:57:33,907 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 02:57:33,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:57:33,908 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:33,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 02:57:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-16 02:57:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-16 02:57:33,926 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 26 [2024-11-16 02:57:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:33,927 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-16 02:57:33,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-16 02:57:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:57:33,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:33,928 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:33,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:57:34,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:34,129 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:34,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 109488944, now seen corresponding path program 5 times [2024-11-16 02:57:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712882666] [2024-11-16 02:57:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:34,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:34,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:34,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712882666] [2024-11-16 02:57:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712882666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357481057] [2024-11-16 02:57:34,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:57:34,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:34,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:34,231 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) [2024-11-16 02:57:34,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:57:34,301 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:57:34,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:34,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:57:34,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:34,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357481057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:34,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:57:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62077546] [2024-11-16 02:57:34,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:34,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:34,449 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:34,586 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-11-16 02:57:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:57:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:34,588 INFO L225 Difference]: With dead ends: 66 [2024-11-16 02:57:34,589 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 02:57:34,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:57:34,590 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:34,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 73 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 02:57:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2024-11-16 02:57:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:34,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-16 02:57:34,602 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 28 [2024-11-16 02:57:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:34,602 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-16 02:57:34,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:34,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-16 02:57:34,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:57:34,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:34,603 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:34,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:57:34,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:34,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:34,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -533051188, now seen corresponding path program 2 times [2024-11-16 02:57:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317984768] [2024-11-16 02:57:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317984768] [2024-11-16 02:57:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317984768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290853614] [2024-11-16 02:57:34,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:34,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:34,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:57:34,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:34,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:34,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:57:34,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:35,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:35,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290853614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:35,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:57:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837897181] [2024-11-16 02:57:35,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:35,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:35,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:35,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:35,123 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:35,211 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2024-11-16 02:57:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:57:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 02:57:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:35,212 INFO L225 Difference]: With dead ends: 70 [2024-11-16 02:57:35,212 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 02:57:35,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:57:35,213 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:35,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 56 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 02:57:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-16 02:57:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-16 02:57:35,218 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2024-11-16 02:57:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:35,218 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-16 02:57:35,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-16 02:57:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:57:35,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:35,219 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:35,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:57:35,420 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,SelfDestructingSolverStorable9 [2024-11-16 02:57:35,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:35,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1780763054, now seen corresponding path program 6 times [2024-11-16 02:57:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:35,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131844283] [2024-11-16 02:57:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:35,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131844283] [2024-11-16 02:57:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131844283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167649832] [2024-11-16 02:57:35,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:35,995 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) [2024-11-16 02:57:35,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:57:36,081 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:57:36,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:36,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:57:36,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:36,099 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 11 treesize of output 7 [2024-11-16 02:57:36,299 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:36,439 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:36,915 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-16 02:57:36,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 10 [2024-11-16 02:57:36,921 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:36,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:37,541 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-16 02:57:37,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-16 02:57:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167649832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:37,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 45 [2024-11-16 02:57:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632442037] [2024-11-16 02:57:37,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:37,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 02:57:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:37,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 02:57:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:57:37,889 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:39,814 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2024-11-16 02:57:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:57:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-16 02:57:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:39,815 INFO L225 Difference]: With dead ends: 84 [2024-11-16 02:57:39,815 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 02:57:39,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=546, Invalid=3876, Unknown=0, NotChecked=0, Total=4422 [2024-11-16 02:57:39,818 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:39,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 320 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:57:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 02:57:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-16 02:57:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-16 02:57:39,828 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 32 [2024-11-16 02:57:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:39,828 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-16 02:57:39,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-16 02:57:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:57:39,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:39,829 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:40,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:40,030 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:40,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash -771393907, now seen corresponding path program 3 times [2024-11-16 02:57:40,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:40,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466364243] [2024-11-16 02:57:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466364243] [2024-11-16 02:57:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466364243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580128796] [2024-11-16 02:57:40,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:40,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:40,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:40,390 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) [2024-11-16 02:57:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:57:40,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:57:40,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:40,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:57:40,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:40,477 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 11 [2024-11-16 02:57:40,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:40,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-16 02:57:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:57:40,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:57:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580128796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:40,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:40,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 17 [2024-11-16 02:57:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475805721] [2024-11-16 02:57:40,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:40,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:57:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:57:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:57:40,698 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:41,020 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2024-11-16 02:57:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-16 02:57:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:41,022 INFO L225 Difference]: With dead ends: 74 [2024-11-16 02:57:41,022 INFO L226 Difference]: Without dead ends: 69 [2024-11-16 02:57:41,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:57:41,023 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:41,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 99 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-16 02:57:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-16 02:57:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2024-11-16 02:57:41,035 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 32 [2024-11-16 02:57:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:41,035 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2024-11-16 02:57:41,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2024-11-16 02:57:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:57:41,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:41,037 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:41,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:57:41,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 02:57:41,241 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:41,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 366676783, now seen corresponding path program 7 times [2024-11-16 02:57:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576733280] [2024-11-16 02:57:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576733280] [2024-11-16 02:57:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576733280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935449386] [2024-11-16 02:57:41,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:57:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:41,392 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:41,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:57:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:41,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:57:41,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:41,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935449386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:41,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:57:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298135404] [2024-11-16 02:57:41,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:41,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:57:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:57:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:57:41,673 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:41,857 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2024-11-16 02:57:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:57:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-16 02:57:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:41,858 INFO L225 Difference]: With dead ends: 87 [2024-11-16 02:57:41,858 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 02:57:41,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:57:41,859 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:41,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 147 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 02:57:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2024-11-16 02:57:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2024-11-16 02:57:41,871 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 34 [2024-11-16 02:57:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:41,872 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2024-11-16 02:57:41,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:41,872 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2024-11-16 02:57:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:57:41,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:41,876 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:41,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:42,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:57:42,077 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:42,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash -130379219, now seen corresponding path program 8 times [2024-11-16 02:57:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811096391] [2024-11-16 02:57:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811096391] [2024-11-16 02:57:42,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811096391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326654547] [2024-11-16 02:57:42,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:42,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:42,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:42,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:57:42,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:42,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:42,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 02:57:42,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:42,914 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 11 treesize of output 7 [2024-11-16 02:57:43,155 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:43,269 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:43,387 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:43,552 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:43,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326654547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:44,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 17] total 50 [2024-11-16 02:57:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940203793] [2024-11-16 02:57:44,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:44,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-16 02:57:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-16 02:57:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2256, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:57:44,301 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:45,416 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2024-11-16 02:57:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:57:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 02:57:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:45,417 INFO L225 Difference]: With dead ends: 99 [2024-11-16 02:57:45,418 INFO L226 Difference]: Without dead ends: 94 [2024-11-16 02:57:45,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=377, Invalid=3913, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 02:57:45,419 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:45,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 466 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:57:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-16 02:57:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2024-11-16 02:57:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.139240506329114) internal successors, (90), 79 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2024-11-16 02:57:45,439 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 38 [2024-11-16 02:57:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:45,439 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2024-11-16 02:57:45,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2024-11-16 02:57:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:57:45,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:45,441 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:45,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:45,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:57:45,645 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:45,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1296500, now seen corresponding path program 4 times [2024-11-16 02:57:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114068488] [2024-11-16 02:57:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114068488] [2024-11-16 02:57:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114068488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494009643] [2024-11-16 02:57:46,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:57:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:46,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:46,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:57:46,159 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:57:46,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:46,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:57:46,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:46,168 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 16 treesize of output 12 [2024-11-16 02:57:46,191 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 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-16 02:57:46,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:46,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 02:57:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:57:46,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:57:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494009643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:46,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 26 [2024-11-16 02:57:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950812007] [2024-11-16 02:57:46,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:46,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:57:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:57:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:57:46,558 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:47,325 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2024-11-16 02:57:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 02:57:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 02:57:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:47,326 INFO L225 Difference]: With dead ends: 122 [2024-11-16 02:57:47,326 INFO L226 Difference]: Without dead ends: 117 [2024-11-16 02:57:47,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=415, Invalid=1565, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:57:47,327 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:47,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 192 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:57:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-16 02:57:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2024-11-16 02:57:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.125) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2024-11-16 02:57:47,343 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 38 [2024-11-16 02:57:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:47,343 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2024-11-16 02:57:47,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2024-11-16 02:57:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 02:57:47,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:47,345 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:47,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:57:47,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 02:57:47,545 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:47,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1105170706, now seen corresponding path program 9 times [2024-11-16 02:57:47,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:47,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717602020] [2024-11-16 02:57:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:47,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:47,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:47,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717602020] [2024-11-16 02:57:47,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717602020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:47,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736452855] [2024-11-16 02:57:47,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:47,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:47,706 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:47,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:57:47,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:57:47,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:47,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-16 02:57:47,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:47,817 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 11 treesize of output 7 [2024-11-16 02:57:47,906 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:47,991 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:48,091 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:48,198 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:57:48,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:48,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:48,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 17 [2024-11-16 02:57:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:57:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736452855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:48,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:48,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 20] total 46 [2024-11-16 02:57:48,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523084255] [2024-11-16 02:57:48,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:48,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 02:57:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 02:57:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1802, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 02:57:48,907 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:51,154 INFO L93 Difference]: Finished difference Result 157 states and 180 transitions. [2024-11-16 02:57:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-16 02:57:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 02:57:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:51,155 INFO L225 Difference]: With dead ends: 157 [2024-11-16 02:57:51,155 INFO L226 Difference]: Without dead ends: 150 [2024-11-16 02:57:51,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1156, Invalid=8156, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 02:57:51,158 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:51,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 553 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:57:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-16 02:57:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 79. [2024-11-16 02:57:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-16 02:57:51,175 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 40 [2024-11-16 02:57:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:51,175 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-16 02:57:51,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-16 02:57:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:57:51,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:51,176 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:51,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:51,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:51,381 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:51,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -487307254, now seen corresponding path program 5 times [2024-11-16 02:57:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921433630] [2024-11-16 02:57:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921433630] [2024-11-16 02:57:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921433630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59783045] [2024-11-16 02:57:51,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:57:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:51,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:51,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:57:51,691 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:57:51,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:51,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:57:51,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:51,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59783045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:51,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:51,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 02:57:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265611826] [2024-11-16 02:57:51,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:51,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:57:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:57:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:57:51,922 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:52,073 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2024-11-16 02:57:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-16 02:57:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:52,075 INFO L225 Difference]: With dead ends: 167 [2024-11-16 02:57:52,075 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 02:57:52,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:57:52,078 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:52,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 73 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 02:57:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2024-11-16 02:57:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-16 02:57:52,096 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 42 [2024-11-16 02:57:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:52,096 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-16 02:57:52,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-16 02:57:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:57:52,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:52,096 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:52,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 02:57:52,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:57:52,308 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:52,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1428937803, now seen corresponding path program 6 times [2024-11-16 02:57:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:52,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464972791] [2024-11-16 02:57:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:52,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:52,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464972791] [2024-11-16 02:57:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464972791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:52,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347759589] [2024-11-16 02:57:52,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:52,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:52,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:52,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:52,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:57:52,992 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 02:57:52,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:52,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 02:57:52,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:53,035 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 11 treesize of output 7 [2024-11-16 02:57:53,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:53,063 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 23 treesize of output 22 [2024-11-16 02:57:53,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:53,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:53,104 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 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-16 02:57:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:57:53,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:53,733 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 31 treesize of output 29 [2024-11-16 02:57:53,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 34 treesize of output 30 [2024-11-16 02:57:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 02:57:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347759589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:53,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:53,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 16] total 39 [2024-11-16 02:57:53,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795864880] [2024-11-16 02:57:53,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:53,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 02:57:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 02:57:53,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:57:53,789 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:54,177 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2024-11-16 02:57:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:57:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-16 02:57:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:54,179 INFO L225 Difference]: With dead ends: 80 [2024-11-16 02:57:54,179 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 02:57:54,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:57:54,180 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:54,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 232 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:57:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 02:57:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2024-11-16 02:57:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-16 02:57:54,197 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 44 [2024-11-16 02:57:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:54,198 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-16 02:57:54,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-16 02:57:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:57:54,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:54,200 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:54,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 02:57:54,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:57:54,401 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:54,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:54,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1942651703, now seen corresponding path program 7 times [2024-11-16 02:57:54,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:54,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448678288] [2024-11-16 02:57:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448678288] [2024-11-16 02:57:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448678288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032285580] [2024-11-16 02:57:54,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:57:54,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:54,589 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:54,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:57:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:54,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:57:54,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:54,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:54,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032285580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:54,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:54,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:57:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024482700] [2024-11-16 02:57:54,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:54,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:57:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:57:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:57:54,962 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:55,098 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2024-11-16 02:57:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:57:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 02:57:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:55,099 INFO L225 Difference]: With dead ends: 132 [2024-11-16 02:57:55,099 INFO L226 Difference]: Without dead ends: 78 [2024-11-16 02:57:55,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:57:55,100 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:55,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 81 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-16 02:57:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2024-11-16 02:57:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2024-11-16 02:57:55,118 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 48 [2024-11-16 02:57:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:55,118 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2024-11-16 02:57:55,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2024-11-16 02:57:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:57:55,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:55,119 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:55,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 02:57:55,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:55,324 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:55,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1042080694, now seen corresponding path program 8 times [2024-11-16 02:57:55,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:55,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920040635] [2024-11-16 02:57:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:57:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920040635] [2024-11-16 02:57:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920040635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436433855] [2024-11-16 02:57:55,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:55,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:55,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:55,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:57:55,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:55,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:55,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:57:55,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:55,842 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 11 treesize of output 7 [2024-11-16 02:57:55,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:55,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-16 02:57:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:55,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:55,915 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 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-16 02:58:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:58:00,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:00,497 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 23 treesize of output 21 [2024-11-16 02:58:00,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2024-11-16 02:58:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 45 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:58:00,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436433855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:00,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:00,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 31 [2024-11-16 02:58:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247506476] [2024-11-16 02:58:00,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:00,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:58:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:58:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=776, Unknown=1, NotChecked=0, Total=930 [2024-11-16 02:58:00,573 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:04,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:58:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:04,870 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-11-16 02:58:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:58:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 02:58:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:04,871 INFO L225 Difference]: With dead ends: 79 [2024-11-16 02:58:04,871 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 02:58:04,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=185, Invalid=936, Unknown=1, NotChecked=0, Total=1122 [2024-11-16 02:58:04,872 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:04,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 287 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 392 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-16 02:58:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 02:58:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-16 02:58:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2024-11-16 02:58:04,886 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 50 [2024-11-16 02:58:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:04,887 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2024-11-16 02:58:04,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2024-11-16 02:58:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:58:04,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:04,887 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:04,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 02:58:05,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:05,088 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:05,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1262396744, now seen corresponding path program 9 times [2024-11-16 02:58:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:05,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378890158] [2024-11-16 02:58:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378890158] [2024-11-16 02:58:05,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378890158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639843431] [2024-11-16 02:58:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:58:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:05,337 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:58:05,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:58:05,457 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:58:05,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:05,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:58:05,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:05,461 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 16 treesize of output 12 [2024-11-16 02:58:05,475 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 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-16 02:58:05,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:05,504 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 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-16 02:58:05,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:05,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 43 [2024-11-16 02:58:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 02:58:05,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 02:58:06,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639843431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:06,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:06,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 34 [2024-11-16 02:58:06,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754777417] [2024-11-16 02:58:06,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:06,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 02:58:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 02:58:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:58:06,010 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:09,125 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2024-11-16 02:58:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-16 02:58:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 02:58:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:09,126 INFO L225 Difference]: With dead ends: 135 [2024-11-16 02:58:09,126 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 02:58:09,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2995 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1577, Invalid=8125, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 02:58:09,129 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 215 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:09,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 290 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:58:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 02:58:09,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2024-11-16 02:58:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2024-11-16 02:58:09,144 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 54 [2024-11-16 02:58:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:09,145 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2024-11-16 02:58:09,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:09,145 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2024-11-16 02:58:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 02:58:09,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:09,145 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:09,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:09,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:09,346 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:09,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 324168199, now seen corresponding path program 10 times [2024-11-16 02:58:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954279124] [2024-11-16 02:58:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 102 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954279124] [2024-11-16 02:58:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954279124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661931273] [2024-11-16 02:58:09,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:58:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:09,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:58:09,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:58:09,726 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:58:09,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:09,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 02:58:09,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:09,733 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 16 treesize of output 12 [2024-11-16 02:58:09,754 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 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-16 02:58:09,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:09,782 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 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-16 02:58:09,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:09,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-16 02:58:10,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:10,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 48 [2024-11-16 02:58:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 38 proven. 134 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:58:10,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 32 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:58:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661931273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:11,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2024-11-16 02:58:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105901087] [2024-11-16 02:58:11,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:11,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 02:58:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 02:58:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2347, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 02:58:11,045 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:25,935 INFO L93 Difference]: Finished difference Result 384 states and 445 transitions. [2024-11-16 02:58:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-11-16 02:58:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 02:58:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:25,937 INFO L225 Difference]: With dead ends: 384 [2024-11-16 02:58:25,937 INFO L226 Difference]: Without dead ends: 330 [2024-11-16 02:58:25,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27528 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=8611, Invalid=61879, Unknown=0, NotChecked=0, Total=70490 [2024-11-16 02:58:25,943 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 272 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:25,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 540 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:58:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-16 02:58:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 67. [2024-11-16 02:58:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-11-16 02:58:25,971 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 60 [2024-11-16 02:58:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:25,971 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-11-16 02:58:25,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-11-16 02:58:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 02:58:25,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:25,972 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:25,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 02:58:26,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 02:58:26,173 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:26,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash 14529447, now seen corresponding path program 10 times [2024-11-16 02:58:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:26,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34738866] [2024-11-16 02:58:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 132 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:26,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34738866] [2024-11-16 02:58:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34738866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476244186] [2024-11-16 02:58:26,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:58:26,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:26,496 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:58:26,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:58:26,660 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:58:26,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:26,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 02:58:26,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:26,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476244186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:27,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:27,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-16 02:58:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649267469] [2024-11-16 02:58:27,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:27,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 02:58:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 02:58:27,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:58:27,057 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:27,272 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2024-11-16 02:58:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:58:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 02:58:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:27,273 INFO L225 Difference]: With dead ends: 194 [2024-11-16 02:58:27,273 INFO L226 Difference]: Without dead ends: 114 [2024-11-16 02:58:27,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 104 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 02:58:27,274 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 141 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:27,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 108 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:58:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-16 02:58:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 69. [2024-11-16 02:58:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2024-11-16 02:58:27,298 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 66 [2024-11-16 02:58:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:27,298 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2024-11-16 02:58:27,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2024-11-16 02:58:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:58:27,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:27,299 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:27,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:27,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 02:58:27,500 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:27,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2061292776, now seen corresponding path program 11 times [2024-11-16 02:58:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714012525] [2024-11-16 02:58:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:29,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714012525] [2024-11-16 02:58:29,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714012525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159038346] [2024-11-16 02:58:29,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:58:29,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:29,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:29,219 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:58:29,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 02:58:29,448 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-16 02:58:29,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:29,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-16 02:58:29,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:29,456 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 11 treesize of output 7 [2024-11-16 02:58:29,547 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:29,635 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:29,751 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:29,880 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,020 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,187 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,395 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,625 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,895 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:58:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:30,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159038346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:33,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:33,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 32, 32] total 88 [2024-11-16 02:58:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255802351] [2024-11-16 02:58:33,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:33,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-16 02:58:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-16 02:58:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7347, Unknown=0, NotChecked=0, Total=7656 [2024-11-16 02:58:33,522 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 88 states, 88 states have (on average 1.8977272727272727) internal successors, (167), 88 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:36,264 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2024-11-16 02:58:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 02:58:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.8977272727272727) internal successors, (167), 88 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 02:58:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:36,266 INFO L225 Difference]: With dead ends: 119 [2024-11-16 02:58:36,266 INFO L226 Difference]: Without dead ends: 114 [2024-11-16 02:58:36,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3613 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=491, Invalid=11065, Unknown=0, NotChecked=0, Total=11556 [2024-11-16 02:58:36,267 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:36,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1244 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 02:58:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-16 02:58:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2024-11-16 02:58:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-11-16 02:58:36,302 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 68 [2024-11-16 02:58:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:36,303 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-11-16 02:58:36,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.8977272727272727) internal successors, (167), 88 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-11-16 02:58:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:58:36,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:36,304 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:36,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:36,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:36,504 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:36,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1994286023, now seen corresponding path program 11 times [2024-11-16 02:58:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015724739] [2024-11-16 02:58:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:36,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 56 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:37,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:37,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015724739] [2024-11-16 02:58:37,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015724739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435506892] [2024-11-16 02:58:37,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:58:37,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:37,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:37,189 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:58:37,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 02:58:37,442 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-16 02:58:37,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:37,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:58:37,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:37,516 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 13 treesize of output 9 [2024-11-16 02:58:37,549 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-16 02:58:37,549 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 25 treesize of output 24 [2024-11-16 02:58:37,609 INFO L349 Elim1Store]: treesize reduction 46, result has 31.3 percent of original size [2024-11-16 02:58:37,609 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 36 treesize of output 38 [2024-11-16 02:58:37,729 INFO L349 Elim1Store]: treesize reduction 82, result has 28.1 percent of original size [2024-11-16 02:58:37,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2024-11-16 02:58:37,891 INFO L349 Elim1Store]: treesize reduction 126, result has 25.4 percent of original size [2024-11-16 02:58:37,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 66