./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina2.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/sina2.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 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:57:41,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:57:41,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:57:41,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:57:41,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:57:41,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:57:41,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:57:41,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:57:41,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:57:41,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:57:41,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:57:41,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:57:41,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:57:41,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:57:41,751 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:57:41,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:57:41,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:57:41,751 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:57:41,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:57:41,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:57:41,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:57:41,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:57:41,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:57:41,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:57:41,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:57:41,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:57:41,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:57:41,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:57:41,756 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:57:41,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:57:41,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:57:41,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:57:41,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:57:41,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:57:41,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:57:41,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:57:41,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:57:41,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:57:41,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:57:41,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:57:41,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:57:41,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:57:41,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc [2024-11-16 02:57:41,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:57:41,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:57:41,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:57:41,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:57:41,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:57:41,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina2.c [2024-11-16 02:57:43,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:57:43,303 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:57:43,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c [2024-11-16 02:57:43,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1461b5d3a/b93decb85bf647c4a180d8f0505171be/FLAGa7cbb9f88 [2024-11-16 02:57:43,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1461b5d3a/b93decb85bf647c4a180d8f0505171be [2024-11-16 02:57:43,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:57:43,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:57:43,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:57:43,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:57:43,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:57:43,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c6f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43, skipping insertion in model container [2024-11-16 02:57:43,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:57:43,498 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/sina2.c[588,601] [2024-11-16 02:57:43,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:57:43,533 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:57:43,543 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/sina2.c[588,601] [2024-11-16 02:57:43,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:57:43,568 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:57:43,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43 WrapperNode [2024-11-16 02:57:43,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:57:43,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:57:43,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:57:43,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:57:43,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,615 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-11-16 02:57:43,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:57:43,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:57:43,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:57:43,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:57:43,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,674 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 8, 4, 5]. 42 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-16 02:57:43,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,679 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:57:43,683 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:57:43,683 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:57:43,683 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:57:43,684 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (1/1) ... [2024-11-16 02:57:43,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:57:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:43,710 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 02:57:43,711 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 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:57:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:57:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:57:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:57:43,807 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:57:43,809 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:57:43,925 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 02:57:43,935 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:57:43,935 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:57:43,948 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:57:43,949 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:57:43,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:57:43 BoogieIcfgContainer [2024-11-16 02:57:43,950 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:57:43,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:57:43,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:57:43,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:57:43,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:57:43" (1/3) ... [2024-11-16 02:57:43,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727670d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:57:43, skipping insertion in model container [2024-11-16 02:57:43,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:57:43" (2/3) ... [2024-11-16 02:57:43,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727670d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:57:43, skipping insertion in model container [2024-11-16 02:57:43,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:57:43" (3/3) ... [2024-11-16 02:57:43,957 INFO L112 eAbstractionObserver]: Analyzing ICFG sina2.c [2024-11-16 02:57:43,970 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:57:43,970 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:57:44,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:57:44,020 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;@6fc17736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:57:44,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:57:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 25 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 02:57:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:57:44,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:44,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:44,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:44,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash 600769007, now seen corresponding path program 1 times [2024-11-16 02:57:44,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:44,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266642487] [2024-11-16 02:57:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:44,165 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 02:57:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266642487] [2024-11-16 02:57:44,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266642487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:57:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:57:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:57:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513871365] [2024-11-16 02:57:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:57:44,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:57:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:57:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:57:44,189 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 25 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:57:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:44,199 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2024-11-16 02:57:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:57:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2024-11-16 02:57:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:44,205 INFO L225 Difference]: With dead ends: 47 [2024-11-16 02:57:44,205 INFO L226 Difference]: Without dead ends: 21 [2024-11-16 02:57:44,206 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 02:57:44,208 INFO L432 NwaCegarLoop]: 29 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, 29 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 02:57:44,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:57:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-16 02:57:44,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-16 02:57:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 02:57:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-16 02:57:44,229 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2024-11-16 02:57:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:44,230 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-16 02:57:44,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:57:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-16 02:57:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 02:57:44,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:44,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:44,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:57:44,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:44,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1140538951, now seen corresponding path program 1 times [2024-11-16 02:57:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152220090] [2024-11-16 02:57:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:44,404 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 02:57:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152220090] [2024-11-16 02:57:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152220090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:57:44,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:57:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:57:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588366030] [2024-11-16 02:57:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:57:44,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:57:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:57:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:57:44,408 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:57:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:44,453 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-16 02:57:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:57:44,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) Word has length 19 [2024-11-16 02:57:44,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:44,454 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:57:44,455 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 02:57:44,455 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 02:57:44,456 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:44,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 24 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:57:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 02:57:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2024-11-16 02:57:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 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 02:57:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-16 02:57:44,464 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2024-11-16 02:57:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:44,464 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-16 02:57:44,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:57:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-16 02:57:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 02:57:44,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:44,466 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:44,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:57:44,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:44,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1310404856, now seen corresponding path program 1 times [2024-11-16 02:57:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:44,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856275737] [2024-11-16 02:57:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856275737] [2024-11-16 02:57:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856275737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66521602] [2024-11-16 02:57:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:45,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:45,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:45,204 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 02:57:45,205 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 02:57:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:45,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:57:45,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:45,341 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 02:57:45,372 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 02:57:45,452 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 02:57:45,566 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 02:57:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:45,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:45,865 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 24 treesize of output 22 [2024-11-16 02:57:45,869 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 32 [2024-11-16 02:57:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:45,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66521602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:45,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:45,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2024-11-16 02:57:45,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288867507] [2024-11-16 02:57:45,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:45,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:57:45,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:45,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:57:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:57:45,917 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:46,220 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-11-16 02:57:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:57:46,220 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-16 02:57:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:46,221 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:57:46,222 INFO L226 Difference]: Without dead ends: 62 [2024-11-16 02:57:46,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:57:46,223 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 69 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:46,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 276 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:57:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-16 02:57:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-11-16 02:57:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-16 02:57:46,236 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 25 [2024-11-16 02:57:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:46,237 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-16 02:57:46,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:46,237 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-16 02:57:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:57:46,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:46,239 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:46,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:46,439 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 02:57:46,440 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:46,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2033206919, now seen corresponding path program 2 times [2024-11-16 02:57:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296705647] [2024-11-16 02:57:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:57:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296705647] [2024-11-16 02:57:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296705647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824207475] [2024-11-16 02:57:46,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:46,548 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 02:57:46,552 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 02:57:46,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:46,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:46,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:57:46,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:57:46,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:57:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824207475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:46,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-16 02:57:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321770016] [2024-11-16 02:57:46,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:46,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:46,712 INFO L87 Difference]: Start difference. First operand 45 states and 52 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 02:57:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:46,852 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-11-16 02:57:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:46,853 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 27 [2024-11-16 02:57:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:46,853 INFO L225 Difference]: With dead ends: 85 [2024-11-16 02:57:46,853 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 02:57:46,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:57:46,854 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:46,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 174 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 02:57:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2024-11-16 02:57:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 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 02:57:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-16 02:57:46,858 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 27 [2024-11-16 02:57:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:46,859 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-16 02:57:46,859 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 02:57:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-16 02:57:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 02:57:46,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:46,859 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:46,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:47,059 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 02:57:47,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:47,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2069386487, now seen corresponding path program 3 times [2024-11-16 02:57:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116054752] [2024-11-16 02:57:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116054752] [2024-11-16 02:57:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116054752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526267138] [2024-11-16 02:57:47,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:47,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:47,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:47,837 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 02:57:47,838 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 02:57:47,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:57:47,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:47,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:57:47,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:47,907 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 02:57:47,923 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 02:57:47,947 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 19 treesize of output 18 [2024-11-16 02:57:48,024 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 02:57:48,071 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 02:57:48,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:48,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:57:48,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:48,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:57:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:48,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:48,736 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 24 treesize of output 22 [2024-11-16 02:57:48,738 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 32 treesize of output 30 [2024-11-16 02:57:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526267138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:48,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2024-11-16 02:57:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832906373] [2024-11-16 02:57:48,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:48,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 02:57:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 02:57:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:57:48,781 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:49,871 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2024-11-16 02:57:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:57:49,871 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-16 02:57:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:49,873 INFO L225 Difference]: With dead ends: 122 [2024-11-16 02:57:49,873 INFO L226 Difference]: Without dead ends: 119 [2024-11-16 02:57:49,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=390, Invalid=2690, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:57:49,874 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 172 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:49,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 538 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:57:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-16 02:57:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 66. [2024-11-16 02:57:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-16 02:57:49,884 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 31 [2024-11-16 02:57:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:49,885 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-16 02:57:49,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-16 02:57:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:57:49,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:49,886 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:50,086 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 02:57:50,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:50,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 88781302, now seen corresponding path program 4 times [2024-11-16 02:57:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:50,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462045655] [2024-11-16 02:57:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:57:50,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:50,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462045655] [2024-11-16 02:57:50,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462045655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617088170] [2024-11-16 02:57:50,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:57:50,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:50,167 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 02:57:50,168 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 02:57:50,229 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:57:50,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:50,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:57:50,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:57:50,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:57:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617088170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:50,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:50,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:57:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912798336] [2024-11-16 02:57:50,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:50,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:50,326 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 02:57:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:50,476 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2024-11-16 02:57:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:57:50,476 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 33 [2024-11-16 02:57:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:50,477 INFO L225 Difference]: With dead ends: 126 [2024-11-16 02:57:50,477 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 02:57:50,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:57:50,478 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:50,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 230 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 02:57:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 61. [2024-11-16 02:57:50,496 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 02:57:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-16 02:57:50,496 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 33 [2024-11-16 02:57:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:50,497 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-16 02:57:50,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 02:57:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-16 02:57:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:57:50,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:50,499 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:50,512 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 02:57:50,700 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 02:57:50,700 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:50,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -349104578, now seen corresponding path program 1 times [2024-11-16 02:57:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:50,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460468588] [2024-11-16 02:57:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460468588] [2024-11-16 02:57:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460468588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543121593] [2024-11-16 02:57:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:51,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:51,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:51,468 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 02:57:51,469 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 02:57:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:51,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 02:57:51,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:51,532 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 02:57:51,547 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 02:57:51,596 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 19 treesize of output 18 [2024-11-16 02:57:51,721 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 02:57:51,759 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 02:57:51,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:51,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:57:51,892 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 02:57:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:52,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:52,353 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 54 treesize of output 50 [2024-11-16 02:57:52,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:52,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 355 treesize of output 331 [2024-11-16 02:57:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:52,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543121593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:52,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 42 [2024-11-16 02:57:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844832846] [2024-11-16 02:57:52,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:52,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 02:57:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 02:57:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 02:57:52,400 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 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 02:57:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:53,187 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2024-11-16 02:57:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 02:57:53,188 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 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 35 [2024-11-16 02:57:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:53,189 INFO L225 Difference]: With dead ends: 128 [2024-11-16 02:57:53,190 INFO L226 Difference]: Without dead ends: 117 [2024-11-16 02:57:53,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=331, Invalid=2861, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 02:57:53,192 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 157 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:53,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 588 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:57:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-16 02:57:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 65. [2024-11-16 02:57:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.125) internal successors, (72), 64 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2024-11-16 02:57:53,225 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35 [2024-11-16 02:57:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:53,225 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2024-11-16 02:57:53,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 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 02:57:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2024-11-16 02:57:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:57:53,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:53,226 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:53,243 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 02:57:53,427 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 02:57:53,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:53,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 899913783, now seen corresponding path program 5 times [2024-11-16 02:57:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047496209] [2024-11-16 02:57:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:57:53,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047496209] [2024-11-16 02:57:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047496209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734567243] [2024-11-16 02:57:53,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:57:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:53,522 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 02:57:53,524 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 02:57:53,597 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:57:53,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:53,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:57:53,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:57:53,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:57:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734567243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:53,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:57:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406199925] [2024-11-16 02:57:53,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:53,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:57:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:57:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:57:53,722 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:53,805 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2024-11-16 02:57:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:57:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-16 02:57:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:53,805 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:57:53,805 INFO L226 Difference]: Without dead ends: 60 [2024-11-16 02:57:53,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 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 02:57:53,806 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:53,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 107 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-16 02:57:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2024-11-16 02:57:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 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 02:57:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-16 02:57:53,813 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2024-11-16 02:57:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:53,814 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-16 02:57:53,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-16 02:57:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 02:57:53,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:53,815 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:53,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:54,018 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 02:57:54,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:54,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:54,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1794024010, now seen corresponding path program 6 times [2024-11-16 02:57:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147137111] [2024-11-16 02:57:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147137111] [2024-11-16 02:57:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147137111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148928552] [2024-11-16 02:57:54,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:54,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:54,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:54,946 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 02:57:54,947 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 02:57:55,022 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:57:55,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:55,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-16 02:57:55,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:55,034 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 02:57:55,043 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 02:57:55,057 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 19 treesize of output 18 [2024-11-16 02:57:55,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:55,097 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 26 treesize of output 28 [2024-11-16 02:57:55,189 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 02:57:55,227 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 21 [2024-11-16 02:57:55,282 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 41 treesize of output 29 [2024-11-16 02:57:55,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:55,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-16 02:57:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:55,507 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-16 02:57:55,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 39 [2024-11-16 02:57:55,595 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2024-11-16 02:57:55,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-16 02:57:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:55,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:56,580 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 86 treesize of output 82 [2024-11-16 02:57:56,583 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 428 treesize of output 424 [2024-11-16 02:57:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148928552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:56,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 45 [2024-11-16 02:57:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79667915] [2024-11-16 02:57:56,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:56,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 02:57:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 02:57:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:57:56,664 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 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 02:57:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:58,857 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2024-11-16 02:57:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-16 02:57:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 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 37 [2024-11-16 02:57:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:58,858 INFO L225 Difference]: With dead ends: 120 [2024-11-16 02:57:58,859 INFO L226 Difference]: Without dead ends: 101 [2024-11-16 02:57:58,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=547, Invalid=4009, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 02:57:58,861 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 138 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:58,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 547 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:57:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-16 02:57:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2024-11-16 02:57:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 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 02:57:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2024-11-16 02:57:58,876 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 37 [2024-11-16 02:57:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:58,876 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2024-11-16 02:57:58,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 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 02:57:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2024-11-16 02:57:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:57:58,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:58,877 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:58,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:59,077 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 02:57:59,077 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:59,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -72767619, now seen corresponding path program 2 times [2024-11-16 02:57:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735659282] [2024-11-16 02:57:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735659282] [2024-11-16 02:58:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735659282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495903516] [2024-11-16 02:58:00,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:58:00,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:00,115 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 02:58:00,116 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 02:58:00,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:58:00,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:00,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-16 02:58:00,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:00,188 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 02:58:00,202 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 02:58:00,218 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 19 treesize of output 18 [2024-11-16 02:58:00,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:00,258 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 26 treesize of output 28 [2024-11-16 02:58:00,369 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 02:58:00,411 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 02:58:00,470 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 02:58:00,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:00,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:58:00,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:00,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:58:00,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:00,677 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-16 02:58:00,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 25 [2024-11-16 02:58:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:00,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:01,551 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 144 treesize of output 136 [2024-11-16 02:58:01,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:01,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10316 treesize of output 9676 [2024-11-16 02:58:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495903516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:01,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 49 [2024-11-16 02:58:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708877966] [2024-11-16 02:58:01,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:01,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:58:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:58:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:58:01,624 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 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 02:58:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:02,409 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2024-11-16 02:58:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:58:02,409 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 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 41 [2024-11-16 02:58:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:02,410 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:58:02,410 INFO L226 Difference]: Without dead ends: 113 [2024-11-16 02:58:02,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 02:58:02,411 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 85 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:02,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 662 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:58:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-16 02:58:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 79. [2024-11-16 02:58:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 78 states have internal predecessors, (86), 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 02:58:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2024-11-16 02:58:02,424 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 41 [2024-11-16 02:58:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:02,424 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2024-11-16 02:58:02,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 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 02:58:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2024-11-16 02:58:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:58:02,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:02,425 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:02,625 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 02:58:02,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:02,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1596930868, now seen corresponding path program 7 times [2024-11-16 02:58:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:02,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466266570] [2024-11-16 02:58:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:58:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:02,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466266570] [2024-11-16 02:58:02,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466266570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074739538] [2024-11-16 02:58:02,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:58:02,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:02,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:02,721 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 02:58:02,722 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 02:58:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:02,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:58:02,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:58:02,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:58:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074739538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:02,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:02,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:58:02,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697637251] [2024-11-16 02:58:02,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:02,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:58:02,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:02,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:58:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:58:02,916 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 02:58:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:03,106 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2024-11-16 02:58:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:58:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 41 [2024-11-16 02:58:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:03,107 INFO L225 Difference]: With dead ends: 142 [2024-11-16 02:58:03,107 INFO L226 Difference]: Without dead ends: 119 [2024-11-16 02:58:03,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:58:03,108 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 164 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:03,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 324 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:58:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-16 02:58:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 71. [2024-11-16 02:58:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:58:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2024-11-16 02:58:03,120 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 41 [2024-11-16 02:58:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:03,120 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2024-11-16 02:58:03,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 02:58:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2024-11-16 02:58:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 02:58:03,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:03,121 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:03,133 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 02:58:03,325 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 02:58:03,325 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:03,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash 824671029, now seen corresponding path program 8 times [2024-11-16 02:58:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957742995] [2024-11-16 02:58:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957742995] [2024-11-16 02:58:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957742995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709748946] [2024-11-16 02:58:04,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:58:04,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:04,287 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 02:58:04,288 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 02:58:04,351 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:58:04,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:04,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-16 02:58:04,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:04,362 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 02:58:04,372 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 02:58:04,387 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 19 treesize of output 18 [2024-11-16 02:58:04,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,406 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 26 treesize of output 28 [2024-11-16 02:58:04,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:58:04,516 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 02:58:04,568 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 02:58:04,611 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 02:58:04,661 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 02:58:04,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-16 02:58:04,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-16 02:58:04,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:58:04,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:04,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:58:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:05,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:05,793 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 160 treesize of output 152 [2024-11-16 02:58:05,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:05,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1541711 treesize of output 1484367 [2024-11-16 02:58:05,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2024-11-16 02:58:05,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:05,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1457277 treesize of output 1399933 [2024-11-16 02:58:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709748946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:05,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-16 02:58:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89830933] [2024-11-16 02:58:05,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:05,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 02:58:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 02:58:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:58:05,946 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 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 02:58:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:07,432 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2024-11-16 02:58:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-16 02:58:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 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 43 [2024-11-16 02:58:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:07,433 INFO L225 Difference]: With dead ends: 171 [2024-11-16 02:58:07,433 INFO L226 Difference]: Without dead ends: 150 [2024-11-16 02:58:07,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=560, Invalid=5140, Unknown=0, NotChecked=0, Total=5700 [2024-11-16 02:58:07,435 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:07,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1047 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:58:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-16 02:58:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 98. [2024-11-16 02:58:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.092783505154639) internal successors, (106), 97 states have internal predecessors, (106), 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 02:58:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2024-11-16 02:58:07,456 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 43 [2024-11-16 02:58:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:07,456 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2024-11-16 02:58:07,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 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 02:58:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2024-11-16 02:58:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 02:58:07,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:07,459 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:07,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:07,660 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 02:58:07,660 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:07,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1709815236, now seen corresponding path program 3 times [2024-11-16 02:58:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680713988] [2024-11-16 02:58:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:58:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680713988] [2024-11-16 02:58:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680713988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878130275] [2024-11-16 02:58:08,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:58:08,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:08,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:08,162 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 02:58:08,163 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 02:58:08,244 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:58:08,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:08,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-16 02:58:08,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:08,256 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 02:58:08,274 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 11 [2024-11-16 02:58:08,294 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-16 02:58:08,294 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 21 treesize of output 20 [2024-11-16 02:58:08,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:08,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2024-11-16 02:58:08,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:08,581 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 36 treesize of output 27 [2024-11-16 02:58:08,623 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 39 treesize of output 31 [2024-11-16 02:58:08,657 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2024-11-16 02:58:08,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 55 [2024-11-16 02:58:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:08,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:09,296 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 132 treesize of output 116 [2024-11-16 02:58:09,748 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 22 treesize of output 20 [2024-11-16 02:58:09,752 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 48 treesize of output 46 [2024-11-16 02:58:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878130275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:09,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:09,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 23] total 56 [2024-11-16 02:58:09,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703312706] [2024-11-16 02:58:09,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:09,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-16 02:58:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-16 02:58:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2658, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:58:09,780 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 02:58:21,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 02:58:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:22,244 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2024-11-16 02:58:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-16 02:58:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 45 [2024-11-16 02:58:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:22,245 INFO L225 Difference]: With dead ends: 160 [2024-11-16 02:58:22,245 INFO L226 Difference]: Without dead ends: 157 [2024-11-16 02:58:22,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2841 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1460, Invalid=8045, Unknown=1, NotChecked=0, Total=9506 [2024-11-16 02:58:22,248 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 275 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 116 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:22,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 739 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 743 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-16 02:58:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-16 02:58:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2024-11-16 02:58:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0862068965517242) internal successors, (126), 116 states have internal predecessors, (126), 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 02:58:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2024-11-16 02:58:22,281 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 45 [2024-11-16 02:58:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:22,281 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2024-11-16 02:58:22,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 02:58:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2024-11-16 02:58:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:58:22,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:22,282 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:22,294 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 02:58:22,482 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 02:58:22,482 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:22,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:22,483 INFO L85 PathProgramCache]: Analyzing trace with hash 94025283, now seen corresponding path program 4 times [2024-11-16 02:58:22,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:22,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217960037] [2024-11-16 02:58:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:22,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:58:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217960037] [2024-11-16 02:58:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217960037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806412145] [2024-11-16 02:58:22,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:58:22,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:22,600 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 02:58:22,601 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 02:58:22,672 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:58:22,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:22,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:58:22,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:58:22,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:58:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806412145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:22,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:22,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:58:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499141915] [2024-11-16 02:58:22,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:22,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:58:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:58:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:58:22,845 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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 02:58:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:23,036 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2024-11-16 02:58:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:58:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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 47 [2024-11-16 02:58:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:23,037 INFO L225 Difference]: With dead ends: 155 [2024-11-16 02:58:23,038 INFO L226 Difference]: Without dead ends: 103 [2024-11-16 02:58:23,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:58:23,040 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 134 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:23,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 176 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:58:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-16 02:58:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2024-11-16 02:58:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 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 02:58:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-16 02:58:23,058 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 47 [2024-11-16 02:58:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:23,058 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-16 02:58:23,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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 02:58:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-16 02:58:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:58:23,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:23,058 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:23,071 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 02:58:23,263 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 02:58:23,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1013378428, now seen corresponding path program 5 times [2024-11-16 02:58:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801992629] [2024-11-16 02:58:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:58:24,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:24,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801992629] [2024-11-16 02:58:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801992629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916635270] [2024-11-16 02:58:24,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:58:24,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:24,164 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 02:58:24,165 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 02:58:24,323 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 02:58:24,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:24,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-16 02:58:24,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:24,333 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 02:58:24,364 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 02:58:24,397 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 19 treesize of output 18 [2024-11-16 02:58:24,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:24,439 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 26 treesize of output 28 [2024-11-16 02:58:24,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:24,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:58:24,596 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 02:58:24,653 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 02:58:24,711 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 02:58:24,762 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 02:58:24,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:24,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-16 02:58:24,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:24,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-16 02:58:25,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:25,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-16 02:58:25,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:25,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:58:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:25,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:26,180 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 160 treesize of output 152 [2024-11-16 02:58:26,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:26,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1222997 treesize of output 1165653 [2024-11-16 02:58:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916635270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:26,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 55 [2024-11-16 02:58:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791495372] [2024-11-16 02:58:26,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:26,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-16 02:58:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-16 02:58:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2767, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:58:26,315 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 55 states have internal predecessors, (123), 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 02:58:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:28,154 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2024-11-16 02:58:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-16 02:58:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 55 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 02:58:28,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:28,155 INFO L225 Difference]: With dead ends: 150 [2024-11-16 02:58:28,155 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:58:28,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=559, Invalid=6923, Unknown=0, NotChecked=0, Total=7482 [2024-11-16 02:58:28,157 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 195 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:28,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1040 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:58:28,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:58:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 99. [2024-11-16 02:58:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1122448979591837) internal successors, (109), 98 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 02:58:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-11-16 02:58:28,179 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 47 [2024-11-16 02:58:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:28,179 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-11-16 02:58:28,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 55 states have internal predecessors, (123), 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 02:58:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-11-16 02:58:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:58:28,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:28,180 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:28,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:28,380 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 02:58:28,380 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:28,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 610482611, now seen corresponding path program 9 times [2024-11-16 02:58:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:28,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905517459] [2024-11-16 02:58:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:58:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905517459] [2024-11-16 02:58:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905517459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828879950] [2024-11-16 02:58:28,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:58:28,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:28,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:28,521 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 02:58:28,522 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 02:58:28,646 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:58:28,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:28,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:58:28,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:58:28,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:58:28,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828879950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:28,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:28,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-16 02:58:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424007513] [2024-11-16 02:58:28,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:28,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:58:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:58:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:58:28,992 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 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 02:58:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:29,530 INFO L93 Difference]: Finished difference Result 168 states and 179 transitions. [2024-11-16 02:58:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:58:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 02:58:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:29,531 INFO L225 Difference]: With dead ends: 168 [2024-11-16 02:58:29,531 INFO L226 Difference]: Without dead ends: 130 [2024-11-16 02:58:29,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=374, Invalid=1882, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 02:58:29,532 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 446 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:29,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 612 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:58:29,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-16 02:58:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 89. [2024-11-16 02:58:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 88 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 02:58:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2024-11-16 02:58:29,554 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 47 [2024-11-16 02:58:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:29,555 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2024-11-16 02:58:29,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 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 02:58:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2024-11-16 02:58:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 02:58:29,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:29,555 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:29,568 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 02:58:29,759 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 02:58:29,760 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:29,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash -184033932, now seen corresponding path program 10 times [2024-11-16 02:58:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371704051] [2024-11-16 02:58:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371704051] [2024-11-16 02:58:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371704051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756121083] [2024-11-16 02:58:31,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:58:31,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:31,143 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 02:58:31,144 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 02:58:31,248 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:58:31,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:31,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-16 02:58:31,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:31,258 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 02:58:31,290 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 02:58:31,328 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 27 treesize of output 26 [2024-11-16 02:58:31,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:31,378 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 38 treesize of output 40 [2024-11-16 02:58:31,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:31,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2024-11-16 02:58:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:31,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:31,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2024-11-16 02:58:33,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-16 02:58:33,799 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 33 treesize of output 21 [2024-11-16 02:58:33,897 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 39 treesize of output 27 [2024-11-16 02:58:34,001 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 44 treesize of output 32 [2024-11-16 02:58:34,120 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 49 treesize of output 37 [2024-11-16 02:58:34,545 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 54 treesize of output 46 [2024-11-16 02:58:34,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,551 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,558 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,561 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,563 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,564 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,573 INFO L349 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2024-11-16 02:58:34,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 92 treesize of output 121 [2024-11-16 02:58:34,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,694 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,700 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,702 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,704 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,712 INFO L349 Elim1Store]: treesize reduction 10, result has 23.1 percent of original size [2024-11-16 02:58:34,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 98 [2024-11-16 02:58:34,827 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,835 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,836 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,842 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-16 02:58:34,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 76 [2024-11-16 02:58:34,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:58:34,957 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,957 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 02:58:34,963 INFO L349 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2024-11-16 02:58:34,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 54 [2024-11-16 02:58:35,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:35,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:58:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:35,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:36,586 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 160 treesize of output 152 [2024-11-16 02:58:36,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:36,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1393253 treesize of output 1335909 [2024-11-16 02:58:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:36,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756121083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:36,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:36,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 25] total 67 [2024-11-16 02:58:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29566075] [2024-11-16 02:58:36,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:36,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-16 02:58:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-16 02:58:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3844, Unknown=1, NotChecked=0, Total=4422 [2024-11-16 02:58:36,726 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 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 02:58:42,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:58:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:50,459 INFO L93 Difference]: Finished difference Result 207 states and 224 transitions. [2024-11-16 02:58:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-16 02:58:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 02:58:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:50,461 INFO L225 Difference]: With dead ends: 207 [2024-11-16 02:58:50,461 INFO L226 Difference]: Without dead ends: 184 [2024-11-16 02:58:50,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3001 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1366, Invalid=9551, Unknown=3, NotChecked=0, Total=10920 [2024-11-16 02:58:50,462 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 246 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 109 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:50,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1497 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1495 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2024-11-16 02:58:50,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-16 02:58:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 125. [2024-11-16 02:58:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0725806451612903) internal successors, (133), 124 states have internal predecessors, (133), 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 02:58:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2024-11-16 02:58:50,498 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 49 [2024-11-16 02:58:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:50,498 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2024-11-16 02:58:50,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 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 02:58:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2024-11-16 02:58:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 02:58:50,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:50,499 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:50,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:50,699 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 02:58:50,700 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:50,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -628759485, now seen corresponding path program 6 times [2024-11-16 02:58:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662593015] [2024-11-16 02:58:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:58:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662593015] [2024-11-16 02:58:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662593015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482602709] [2024-11-16 02:58:51,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:58:51,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:51,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:51,641 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 02:58:51,641 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 02:58:51,778 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 02:58:51,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:58:51,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-16 02:58:51,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:51,789 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 02:58:51,821 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 02:58:51,860 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-16 02:58:51,860 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 23 treesize of output 22 [2024-11-16 02:58:51,910 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-16 02:58:51,910 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 2 case distinctions, treesize of input 34 treesize of output 36 [2024-11-16 02:58:51,973 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-16 02:58:51,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 48 [2024-11-16 02:58:52,176 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 02:58:52,242 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 25 treesize of output 17 [2024-11-16 02:58:52,312 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 35 treesize of output 23 [2024-11-16 02:58:52,385 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 40 treesize of output 28 [2024-11-16 02:58:52,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:52,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-16 02:58:52,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:52,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:58:52,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:52,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:58:52,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:52,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:58:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:53,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:58:54,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-16 02:58:54,177 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 28 treesize of output 26 [2024-11-16 02:58:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:58:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482602709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:58:54,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:58:54,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 64 [2024-11-16 02:58:54,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332220921] [2024-11-16 02:58:54,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:58:54,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 02:58:54,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:58:54,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 02:58:54,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=3587, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 02:58:54,229 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 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 02:58:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:58:58,125 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2024-11-16 02:58:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-16 02:58:58,125 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 02:58:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:58:58,126 INFO L225 Difference]: With dead ends: 175 [2024-11-16 02:58:58,126 INFO L226 Difference]: Without dead ends: 172 [2024-11-16 02:58:58,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1386, Invalid=10824, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 02:58:58,127 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 296 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:58:58,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1155 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 02:58:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-16 02:58:58,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 125. [2024-11-16 02:58:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.064516129032258) internal successors, (132), 124 states have internal predecessors, (132), 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 02:58:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2024-11-16 02:58:58,168 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 51 [2024-11-16 02:58:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:58:58,168 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2024-11-16 02:58:58,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 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 02:58:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2024-11-16 02:58:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 02:58:58,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:58:58,169 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:58:58,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 02:58:58,369 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 02:58:58,369 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:58:58,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:58:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2025723963, now seen corresponding path program 7 times [2024-11-16 02:58:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:58:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377678158] [2024-11-16 02:58:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:58:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:58:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 71 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:58:59,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:58:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377678158] [2024-11-16 02:58:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377678158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:58:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51295080] [2024-11-16 02:58:59,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:58:59,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:58:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:58:59,287 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 02:58:59,288 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 02:58:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:58:59,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-16 02:58:59,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:58:59,395 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 02:58:59,424 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 02:58:59,456 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 19 treesize of output 18 [2024-11-16 02:58:59,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:59,507 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 26 treesize of output 28 [2024-11-16 02:58:59,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:59,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:58:59,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:58:59,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-16 02:58:59,796 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 02:58:59,860 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 02:58:59,923 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 02:58:59,996 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 02:59:00,064 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 02:59:00,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:00,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 44 [2024-11-16 02:59:00,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:00,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-16 02:59:00,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:00,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-16 02:59:00,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:00,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:59:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:59:00,476 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-16 02:59:00,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 25 [2024-11-16 02:59:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:59:00,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:59:06,971 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 310 treesize of output 298 [2024-11-16 02:59:07,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:07,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 611770272 treesize of output 592895904 [2024-11-16 02:59:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 83 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:59:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51295080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:59:07,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:59:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 24] total 62 [2024-11-16 02:59:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637163499] [2024-11-16 02:59:07,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:59:07,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 02:59:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:59:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 02:59:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3483, Unknown=7, NotChecked=0, Total=3782 [2024-11-16 02:59:07,203 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 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 02:59:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:59:09,680 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2024-11-16 02:59:09,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-16 02:59:09,681 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 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 53 [2024-11-16 02:59:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:59:09,682 INFO L225 Difference]: With dead ends: 162 [2024-11-16 02:59:09,682 INFO L226 Difference]: Without dead ends: 159 [2024-11-16 02:59:09,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=600, Invalid=6533, Unknown=7, NotChecked=0, Total=7140 [2024-11-16 02:59:09,683 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:59:09,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1595 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 02:59:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-16 02:59:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2024-11-16 02:59:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0687022900763359) internal successors, (140), 131 states have internal predecessors, (140), 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 02:59:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2024-11-16 02:59:09,729 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 53 [2024-11-16 02:59:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:59:09,729 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2024-11-16 02:59:09,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 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 02:59:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2024-11-16 02:59:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 02:59:09,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:59:09,730 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:59:09,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 02:59:09,933 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 02:59:09,934 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:59:09,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:59:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash -819060854, now seen corresponding path program 8 times [2024-11-16 02:59:09,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:59:09,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194492512] [2024-11-16 02:59:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:59:09,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:59:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:59:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:59:11,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:59:11,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194492512] [2024-11-16 02:59:11,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194492512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:59:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366064075] [2024-11-16 02:59:11,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:59:11,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:59:11,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:59:11,469 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 02:59:11,470 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 02:59:11,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:59:11,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:59:11,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-16 02:59:11,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:59:11,573 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 02:59:11,610 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 02:59:11,656 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 19 treesize of output 18 [2024-11-16 02:59:11,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:11,725 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 26 treesize of output 28 [2024-11-16 02:59:11,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:11,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:59:12,070 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 02:59:12,147 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 02:59:12,214 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 02:59:12,281 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 02:59:12,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:12,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-16 02:59:12,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:12,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-16 02:59:12,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:59:12,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 02:59:12,655 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 02:59:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:59:12,917 INFO L311 TraceCheckSpWp]: Computing backward predicates...