./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s42if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/s42if.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 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:28:22,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:28:22,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:28:22,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:28:22,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:28:22,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:28:22,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:28:22,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:28:22,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:28:22,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:28:22,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:28:22,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:28:22,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:28:22,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:28:22,689 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:28:22,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:28:22,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:28:22,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:28:22,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:28:22,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:28:22,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:28:22,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:28:22,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:28:22,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:28:22,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:28:22,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:28:22,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:28:22,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:28:22,696 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:28:22,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:28:22,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:28:22,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:28:22,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:22,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:28:22,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:28:22,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:28:22,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:28:22,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:28:22,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:28:22,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:28:22,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:28:22,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:28:22,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a [2024-11-09 18:28:22,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:28:22,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:28:22,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:28:22,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:28:22,965 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:28:22,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s42if.c [2024-11-09 18:28:24,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:28:24,470 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:28:24,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s42if.c [2024-11-09 18:28:24,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd62f99a2/c4cf33f500dc4125b2cf00ca69a55eaf/FLAG79a931b46 [2024-11-09 18:28:24,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd62f99a2/c4cf33f500dc4125b2cf00ca69a55eaf [2024-11-09 18:28:24,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:28:24,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:28:24,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:24,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:28:24,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:28:24,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fc1b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24, skipping insertion in model container [2024-11-09 18:28:24,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:28:24,650 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/s42if.c[588,601] [2024-11-09 18:28:24,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:24,677 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:28:24,692 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/s42if.c[588,601] [2024-11-09 18:28:24,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:24,717 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:28:24,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24 WrapperNode [2024-11-09 18:28:24,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:24,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:24,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:28:24,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:28:24,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,747 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-09 18:28:24,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:24,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:28:24,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:28:24,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:28:24,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,772 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 6, 9]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2024-11-09 18:28:24,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:28:24,783 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:28:24,784 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:28:24,784 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:28:24,784 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (1/1) ... [2024-11-09 18:28:24,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:24,815 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) [2024-11-09 18:28:24,818 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 [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:28:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:28:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:28:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:28:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:28:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:28:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:28:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:28:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:28:24,999 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:28:25,005 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:28:25,317 INFO L1247 $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; [2024-11-09 18:28:25,327 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 18:28:25,327 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:28:25,339 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:28:25,339 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:28:25,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:25 BoogieIcfgContainer [2024-11-09 18:28:25,340 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:28:25,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:28:25,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:28:25,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:28:25,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:24" (1/3) ... [2024-11-09 18:28:25,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae8ea7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:25, skipping insertion in model container [2024-11-09 18:28:25,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:24" (2/3) ... [2024-11-09 18:28:25,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae8ea7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:25, skipping insertion in model container [2024-11-09 18:28:25,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:25" (3/3) ... [2024-11-09 18:28:25,349 INFO L112 eAbstractionObserver]: Analyzing ICFG s42if.c [2024-11-09 18:28:25,361 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:28:25,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:28:25,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:28:25,420 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;@461affcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:28:25,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:28:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:28:25,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:25,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:25,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:25,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1088486860, now seen corresponding path program 1 times [2024-11-09 18:28:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164036781] [2024-11-09 18:28:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:25,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:25,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164036781] [2024-11-09 18:28:25,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164036781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:25,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:25,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:28:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831269659] [2024-11-09 18:28:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:25,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:28:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:28:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:28:25,602 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:25,613 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-09 18:28:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:28:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 18:28:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:25,623 INFO L225 Difference]: With dead ends: 49 [2024-11-09 18:28:25,623 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:28:25,625 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 [2024-11-09 18:28:25,628 INFO L432 NwaCegarLoop]: 31 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, 31 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 [2024-11-09 18:28:25,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:28:25,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:28:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:28:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2024-11-09 18:28:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 18:28:25,654 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2024-11-09 18:28:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 18:28:25,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 18:28:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 18:28:25,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:25,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:28:25,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:25,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 632050842, now seen corresponding path program 1 times [2024-11-09 18:28:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403336303] [2024-11-09 18:28:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403336303] [2024-11-09 18:28:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403336303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:25,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:28:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288777257] [2024-11-09 18:28:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:25,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:28:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:28:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:28:25,811 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 18:28:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:25,882 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-09 18:28:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:28:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-09 18:28:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:25,883 INFO L225 Difference]: With dead ends: 47 [2024-11-09 18:28:25,883 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:28:25,884 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 [2024-11-09 18:28:25,885 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:25,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:28:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-09 18:28:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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) [2024-11-09 18:28:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 18:28:25,894 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2024-11-09 18:28:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:25,895 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 18:28:25,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 18:28:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 18:28:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:25,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:25,895 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:25,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:28:25,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:25,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2142199865, now seen corresponding path program 1 times [2024-11-09 18:28:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898213100] [2024-11-09 18:28:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898213100] [2024-11-09 18:28:26,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898213100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343005142] [2024-11-09 18:28:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:26,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:26,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:26,439 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) [2024-11-09 18:28:26,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:28:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:26,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:28:26,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:26,566 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 [2024-11-09 18:28:26,700 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 [2024-11-09 18:28:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:26,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343005142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:26,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:26,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-09 18:28:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685219760] [2024-11-09 18:28:26,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:26,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:26,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:26,906 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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) [2024-11-09 18:28:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:27,151 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2024-11-09 18:28:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:28:27,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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 [2024-11-09 18:28:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:27,153 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:28:27,153 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 18:28:27,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:28:27,154 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:27,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 98 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 18:28:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2024-11-09 18:28:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2024-11-09 18:28:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-09 18:28:27,160 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2024-11-09 18:28:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:27,161 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-09 18:28:27,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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) [2024-11-09 18:28:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-09 18:28:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:27,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:27,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:27,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:28:27,362 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 [2024-11-09 18:28:27,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:27,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash -409957096, now seen corresponding path program 1 times [2024-11-09 18:28:27,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:27,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799122650] [2024-11-09 18:28:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:27,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799122650] [2024-11-09 18:28:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799122650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414257172] [2024-11-09 18:28:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:27,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:27,592 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) [2024-11-09 18:28:27,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:28:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:27,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:28:27,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:27,697 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 [2024-11-09 18:28:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:27,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:27,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-09 18:28:27,798 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:27,799 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 24 treesize of output 16 [2024-11-09 18:28:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414257172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:27,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-09 18:28:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692110482] [2024-11-09 18:28:27,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:27,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:27,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:27,816 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2024-11-09 18:28:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:27,963 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2024-11-09 18:28:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:28:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 [2024-11-09 18:28:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:27,964 INFO L225 Difference]: With dead ends: 111 [2024-11-09 18:28:27,964 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 18:28:27,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:28:27,966 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:27,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 157 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 18:28:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2024-11-09 18:28:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-09 18:28:27,976 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2024-11-09 18:28:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:27,977 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-09 18:28:27,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2024-11-09 18:28:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-09 18:28:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:27,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:27,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:27,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:28:28,181 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 [2024-11-09 18:28:28,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:28,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1097594713, now seen corresponding path program 1 times [2024-11-09 18:28:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842012543] [2024-11-09 18:28:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842012543] [2024-11-09 18:28:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842012543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635573270] [2024-11-09 18:28:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:28,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:28,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:28,332 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) [2024-11-09 18:28:28,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:28:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:28,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:28:28,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:28,455 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 [2024-11-09 18:28:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:28,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:28,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:28:28,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:28:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635573270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:28,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 18:28:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274938167] [2024-11-09 18:28:28,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:28,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:28:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:28:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:28:28,545 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 18:28:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:28,623 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2024-11-09 18:28:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:28:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) Word has length 27 [2024-11-09 18:28:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:28,629 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:28:28,629 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 18:28:28,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:28,630 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:28,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 18:28:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-09 18:28:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 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) [2024-11-09 18:28:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-09 18:28:28,641 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2024-11-09 18:28:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:28,641 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-09 18:28:28,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 18:28:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-09 18:28:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:28:28,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:28,644 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, 1, 1] [2024-11-09 18:28:28,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:28,846 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 [2024-11-09 18:28:28,847 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:28,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1727867096, now seen corresponding path program 2 times [2024-11-09 18:28:28,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:28,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455388469] [2024-11-09 18:28:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:28,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455388469] [2024-11-09 18:28:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455388469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183846287] [2024-11-09 18:28:28,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:28,910 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) [2024-11-09 18:28:28,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:28:28,967 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:28,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:28,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:28,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:29,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183846287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:29,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:29,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187360024] [2024-11-09 18:28:29,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:29,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:29,063 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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) [2024-11-09 18:28:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:29,196 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2024-11-09 18:28:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:28:29,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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 29 [2024-11-09 18:28:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:29,198 INFO L225 Difference]: With dead ends: 110 [2024-11-09 18:28:29,198 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 18:28:29,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:28:29,199 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:29,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 93 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 18:28:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2024-11-09 18:28:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 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) [2024-11-09 18:28:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-09 18:28:29,206 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 29 [2024-11-09 18:28:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:29,206 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-09 18:28:29,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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) [2024-11-09 18:28:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-09 18:28:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:28:29,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:29,210 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:29,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:28:29,414 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 [2024-11-09 18:28:29,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:29,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 107565623, now seen corresponding path program 3 times [2024-11-09 18:28:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437150901] [2024-11-09 18:28:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437150901] [2024-11-09 18:28:29,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437150901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:29,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560646353] [2024-11-09 18:28:29,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:29,502 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) [2024-11-09 18:28:29,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:28:29,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:28:29,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:29,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:29,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:29,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560646353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:29,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865104382] [2024-11-09 18:28:29,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:29,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:29,651 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2024-11-09 18:28:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:29,723 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-09 18:28:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:28:29,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 [2024-11-09 18:28:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:29,724 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:28:29,724 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 18:28:29,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:28:29,725 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:29,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 18:28:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-09 18:28:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 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) [2024-11-09 18:28:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-09 18:28:29,737 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 31 [2024-11-09 18:28:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:29,737 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-09 18:28:29,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2024-11-09 18:28:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-09 18:28:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:29,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:29,738 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:29,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:28:29,940 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 [2024-11-09 18:28:29,941 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:29,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2130604056, now seen corresponding path program 4 times [2024-11-09 18:28:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326102193] [2024-11-09 18:28:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326102193] [2024-11-09 18:28:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326102193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407060840] [2024-11-09 18:28:30,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:30,255 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) [2024-11-09 18:28:30,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:28:30,314 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:30,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:30,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 18:28:30,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:30,321 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 [2024-11-09 18:28:30,484 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 [2024-11-09 18:28:30,558 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 [2024-11-09 18:28:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:30,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407060840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:30,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2024-11-09 18:28:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54261875] [2024-11-09 18:28:30,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:30,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:28:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:28:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:28:30,988 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 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) [2024-11-09 18:28:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:31,574 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2024-11-09 18:28:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:28:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 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 [2024-11-09 18:28:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:31,575 INFO L225 Difference]: With dead ends: 111 [2024-11-09 18:28:31,575 INFO L226 Difference]: Without dead ends: 100 [2024-11-09 18:28:31,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=1842, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:28:31,576 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:31,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 241 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:28:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-09 18:28:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2024-11-09 18:28:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 84 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2024-11-09 18:28:31,588 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 37 [2024-11-09 18:28:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:31,588 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2024-11-09 18:28:31,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 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) [2024-11-09 18:28:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2024-11-09 18:28:31,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:31,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:31,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:31,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:28:31,790 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 [2024-11-09 18:28:31,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:31,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash -421552905, now seen corresponding path program 1 times [2024-11-09 18:28:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:31,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383994103] [2024-11-09 18:28:31,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:31,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383994103] [2024-11-09 18:28:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383994103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651603383] [2024-11-09 18:28:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:32,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:32,028 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) [2024-11-09 18:28:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:28:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:28:32,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:32,135 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 [2024-11-09 18:28:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:32,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:32,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:28:32,241 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:32,241 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 26 treesize of output 16 [2024-11-09 18:28:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:32,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651603383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:32,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:32,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-09 18:28:32,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157529339] [2024-11-09 18:28:32,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:32,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:32,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:32,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:32,263 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-09 18:28:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:32,463 INFO L93 Difference]: Finished difference Result 137 states and 165 transitions. [2024-11-09 18:28:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:28:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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 37 [2024-11-09 18:28:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:32,464 INFO L225 Difference]: With dead ends: 137 [2024-11-09 18:28:32,464 INFO L226 Difference]: Without dead ends: 128 [2024-11-09 18:28:32,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:28:32,465 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 75 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:32,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 248 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-09 18:28:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2024-11-09 18:28:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.184782608695652) internal successors, (109), 92 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) [2024-11-09 18:28:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2024-11-09 18:28:32,477 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 37 [2024-11-09 18:28:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:32,477 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2024-11-09 18:28:32,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-09 18:28:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2024-11-09 18:28:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:32,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:32,478 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, 1, 1] [2024-11-09 18:28:32,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:28:32,682 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 [2024-11-09 18:28:32,683 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:32,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1266024776, now seen corresponding path program 1 times [2024-11-09 18:28:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919789429] [2024-11-09 18:28:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:32,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919789429] [2024-11-09 18:28:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919789429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010409857] [2024-11-09 18:28:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:32,867 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) [2024-11-09 18:28:32,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:28:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:28:32,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:32,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:32,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:28:32,970 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 25 treesize of output 20 [2024-11-09 18:28:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:32,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:33,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 18:28:33,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 18:28:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010409857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:33,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 18:28:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447320260] [2024-11-09 18:28:33,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:33,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:33,059 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:33,156 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2024-11-09 18:28:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:28:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 18:28:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:33,158 INFO L225 Difference]: With dead ends: 147 [2024-11-09 18:28:33,158 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 18:28:33,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:28:33,159 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:33,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 18:28:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2024-11-09 18:28:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 94 states have internal predecessors, (111), 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) [2024-11-09 18:28:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2024-11-09 18:28:33,169 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 37 [2024-11-09 18:28:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:33,169 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2024-11-09 18:28:33,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2024-11-09 18:28:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 18:28:33,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:33,170 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:33,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:33,370 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 [2024-11-09 18:28:33,371 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:33,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1883423241, now seen corresponding path program 5 times [2024-11-09 18:28:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660472166] [2024-11-09 18:28:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660472166] [2024-11-09 18:28:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660472166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987474753] [2024-11-09 18:28:33,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:28:33,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:33,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:33,457 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) [2024-11-09 18:28:33,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:28:33,529 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:28:33,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:33,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:28:33,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:33,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987474753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:33,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:28:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897910840] [2024-11-09 18:28:33,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:33,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:33,663 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2024-11-09 18:28:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:33,830 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2024-11-09 18:28:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:28:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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 39 [2024-11-09 18:28:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:33,831 INFO L225 Difference]: With dead ends: 151 [2024-11-09 18:28:33,831 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 18:28:33,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:28:33,832 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 64 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:33,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 112 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 18:28:33,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2024-11-09 18:28:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 93 states have internal predecessors, (110), 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) [2024-11-09 18:28:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2024-11-09 18:28:33,839 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 39 [2024-11-09 18:28:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:33,840 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2024-11-09 18:28:33,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2024-11-09 18:28:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2024-11-09 18:28:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:28:33,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:33,841 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:33,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:34,041 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 [2024-11-09 18:28:34,042 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:34,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1512088938, now seen corresponding path program 6 times [2024-11-09 18:28:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141388679] [2024-11-09 18:28:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141388679] [2024-11-09 18:28:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141388679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599642739] [2024-11-09 18:28:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:28:34,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:34,123 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) [2024-11-09 18:28:34,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:28:34,193 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:28:34,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:34,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:28:34,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:34,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599642739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:34,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:28:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394632311] [2024-11-09 18:28:34,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:34,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:34,312 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) [2024-11-09 18:28:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:34,411 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2024-11-09 18:28:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:28:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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 41 [2024-11-09 18:28:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:34,412 INFO L225 Difference]: With dead ends: 137 [2024-11-09 18:28:34,412 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:28:34,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:28:34,413 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 75 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:34,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 78 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:28:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-09 18:28:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-09 18:28:34,419 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 41 [2024-11-09 18:28:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:34,419 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-09 18:28:34,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) [2024-11-09 18:28:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-09 18:28:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:34,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:34,420 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:34,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:34,620 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 [2024-11-09 18:28:34,621 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:34,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1428730935, now seen corresponding path program 7 times [2024-11-09 18:28:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411509572] [2024-11-09 18:28:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411509572] [2024-11-09 18:28:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411509572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254895997] [2024-11-09 18:28:35,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:28:35,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:35,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:35,029 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) [2024-11-09 18:28:35,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:28:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:35,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 18:28:35,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:35,106 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 [2024-11-09 18:28:35,193 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 [2024-11-09 18:28:35,260 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 [2024-11-09 18:28:35,353 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 [2024-11-09 18:28:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:35,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:35,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254895997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:35,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:35,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 33 [2024-11-09 18:28:35,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595055773] [2024-11-09 18:28:35,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:35,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:28:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:28:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:28:35,706 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 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) [2024-11-09 18:28:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:36,752 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2024-11-09 18:28:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 18:28:36,753 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 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) Word has length 47 [2024-11-09 18:28:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:36,753 INFO L225 Difference]: With dead ends: 161 [2024-11-09 18:28:36,753 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 18:28:36,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=3046, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:28:36,755 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:36,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 406 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:28:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 18:28:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2024-11-09 18:28:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 126 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2024-11-09 18:28:36,766 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 47 [2024-11-09 18:28:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:36,766 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2024-11-09 18:28:36,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 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) [2024-11-09 18:28:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2024-11-09 18:28:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:36,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:36,767 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:36,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:36,967 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 [2024-11-09 18:28:36,967 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:36,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1123426026, now seen corresponding path program 2 times [2024-11-09 18:28:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368133136] [2024-11-09 18:28:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368133136] [2024-11-09 18:28:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368133136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441136530] [2024-11-09 18:28:37,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:37,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:37,350 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) [2024-11-09 18:28:37,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:28:37,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:37,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:37,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 18:28:37,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:37,501 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 [2024-11-09 18:28:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:37,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:37,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:28:37,644 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:37,644 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 26 treesize of output 16 [2024-11-09 18:28:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441136530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:37,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:37,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 30 [2024-11-09 18:28:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473065244] [2024-11-09 18:28:37,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:37,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 18:28:37,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 18:28:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:28:37,691 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 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) [2024-11-09 18:28:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:38,146 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2024-11-09 18:28:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:28:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 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 [2024-11-09 18:28:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:38,148 INFO L225 Difference]: With dead ends: 171 [2024-11-09 18:28:38,148 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 18:28:38,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:28:38,150 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 208 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:38,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 325 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:28:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 18:28:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 135. [2024-11-09 18:28:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 134 states have internal predecessors, (159), 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) [2024-11-09 18:28:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2024-11-09 18:28:38,171 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 47 [2024-11-09 18:28:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:38,171 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2024-11-09 18:28:38,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 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) [2024-11-09 18:28:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2024-11-09 18:28:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:38,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:38,172 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, 1, 1] [2024-11-09 18:28:38,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:38,372 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 [2024-11-09 18:28:38,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:38,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 121338455, now seen corresponding path program 2 times [2024-11-09 18:28:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540748678] [2024-11-09 18:28:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:38,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540748678] [2024-11-09 18:28:38,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540748678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:38,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675960574] [2024-11-09 18:28:38,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:38,592 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) [2024-11-09 18:28:38,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:28:38,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:38,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:38,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 18:28:38,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:38,714 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 [2024-11-09 18:28:38,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:28:38,774 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 25 treesize of output 20 [2024-11-09 18:28:38,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:28:38,808 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 25 treesize of output 20 [2024-11-09 18:28:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:38,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:38,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 18:28:38,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 18:28:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:38,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675960574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:38,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:38,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-09 18:28:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102706] [2024-11-09 18:28:38,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:38,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:38,882 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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) [2024-11-09 18:28:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:39,057 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-09 18:28:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:28:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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 [2024-11-09 18:28:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:39,058 INFO L225 Difference]: With dead ends: 213 [2024-11-09 18:28:39,058 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 18:28:39,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:28:39,059 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:39,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 172 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 18:28:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-09 18:28:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 136 states have internal predecessors, (161), 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) [2024-11-09 18:28:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2024-11-09 18:28:39,074 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 47 [2024-11-09 18:28:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:39,074 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2024-11-09 18:28:39,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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) [2024-11-09 18:28:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2024-11-09 18:28:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 18:28:39,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:39,075 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:39,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:28:39,279 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 [2024-11-09 18:28:39,280 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:39,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -423430314, now seen corresponding path program 8 times [2024-11-09 18:28:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:39,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861744850] [2024-11-09 18:28:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:39,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861744850] [2024-11-09 18:28:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861744850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891113026] [2024-11-09 18:28:39,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:39,416 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) [2024-11-09 18:28:39,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:28:39,495 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:39,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:39,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:28:39,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:39,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:39,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891113026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:39,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:39,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:28:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919791973] [2024-11-09 18:28:39,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:39,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:28:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:28:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:28:39,740 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2024-11-09 18:28:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:40,014 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2024-11-09 18:28:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:28:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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 [2024-11-09 18:28:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:40,015 INFO L225 Difference]: With dead ends: 201 [2024-11-09 18:28:40,015 INFO L226 Difference]: Without dead ends: 177 [2024-11-09 18:28:40,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:28:40,016 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 103 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:40,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 154 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-09 18:28:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2024-11-09 18:28:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.185483870967742) internal successors, (147), 124 states have internal predecessors, (147), 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) [2024-11-09 18:28:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-09 18:28:40,027 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 49 [2024-11-09 18:28:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:40,028 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-09 18:28:40,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2024-11-09 18:28:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-09 18:28:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:28:40,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:40,028 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:40,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:28:40,232 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 [2024-11-09 18:28:40,233 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:40,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash 385644341, now seen corresponding path program 9 times [2024-11-09 18:28:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024996694] [2024-11-09 18:28:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:40,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024996694] [2024-11-09 18:28:40,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024996694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385892823] [2024-11-09 18:28:40,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:40,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:40,346 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) [2024-11-09 18:28:40,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:28:40,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:28:40,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:40,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:28:40,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:40,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385892823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:40,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:40,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:28:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326201207] [2024-11-09 18:28:40,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:40,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:28:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:28:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:28:40,664 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 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) [2024-11-09 18:28:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:40,809 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2024-11-09 18:28:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:28:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 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) Word has length 51 [2024-11-09 18:28:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:40,810 INFO L225 Difference]: With dead ends: 180 [2024-11-09 18:28:40,810 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 18:28:40,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:28:40,811 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:40,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 18:28:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-09 18:28:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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) [2024-11-09 18:28:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-09 18:28:40,822 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 51 [2024-11-09 18:28:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:40,822 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-09 18:28:40,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 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) [2024-11-09 18:28:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-09 18:28:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:28:40,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:40,823 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:40,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:41,023 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 [2024-11-09 18:28:41,024 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:41,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 398548118, now seen corresponding path program 10 times [2024-11-09 18:28:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475383021] [2024-11-09 18:28:41,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:28:41,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475383021] [2024-11-09 18:28:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475383021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182323103] [2024-11-09 18:28:41,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:41,614 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) [2024-11-09 18:28:41,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:28:41,702 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:41,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:41,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:28:41,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:41,708 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 [2024-11-09 18:28:42,045 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 [2024-11-09 18:28:42,124 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 [2024-11-09 18:28:42,233 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 [2024-11-09 18:28:42,350 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 [2024-11-09 18:28:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:42,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182323103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:43,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 58 [2024-11-09 18:28:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81598607] [2024-11-09 18:28:43,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:43,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-09 18:28:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-09 18:28:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3007, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 18:28:43,287 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 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) [2024-11-09 18:28:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:46,163 INFO L93 Difference]: Finished difference Result 253 states and 304 transitions. [2024-11-09 18:28:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-09 18:28:46,164 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 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) Word has length 57 [2024-11-09 18:28:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:46,165 INFO L225 Difference]: With dead ends: 253 [2024-11-09 18:28:46,165 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 18:28:46,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1288, Invalid=11368, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 18:28:46,168 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 262 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:46,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 695 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 18:28:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 18:28:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 160. [2024-11-09 18:28:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 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) [2024-11-09 18:28:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2024-11-09 18:28:46,195 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 57 [2024-11-09 18:28:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2024-11-09 18:28:46,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 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) [2024-11-09 18:28:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2024-11-09 18:28:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:28:46,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:46,196 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:46,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 18:28:46,400 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 [2024-11-09 18:28:46,401 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:46,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2141358453, now seen corresponding path program 3 times [2024-11-09 18:28:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978542181] [2024-11-09 18:28:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:46,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:46,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978542181] [2024-11-09 18:28:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978542181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963749677] [2024-11-09 18:28:46,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:46,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:46,854 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) [2024-11-09 18:28:46,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:28:46,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:28:46,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:46,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:28:46,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:46,952 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 27 treesize of output 15 [2024-11-09 18:28:47,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:28:47,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-09 18:28:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:28:47,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:28:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963749677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:47,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:47,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 31 [2024-11-09 18:28:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012170790] [2024-11-09 18:28:47,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:47,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:28:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:28:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:28:47,266 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-09 18:28:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:48,559 INFO L93 Difference]: Finished difference Result 294 states and 351 transitions. [2024-11-09 18:28:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 18:28:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 57 [2024-11-09 18:28:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:48,561 INFO L225 Difference]: With dead ends: 294 [2024-11-09 18:28:48,561 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 18:28:48,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1035, Invalid=4665, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 18:28:48,563 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 321 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:48,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 309 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:28:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 18:28:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 225. [2024-11-09 18:28:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.1919642857142858) internal successors, (267), 224 states have internal predecessors, (267), 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) [2024-11-09 18:28:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2024-11-09 18:28:48,592 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 57 [2024-11-09 18:28:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:48,593 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2024-11-09 18:28:48,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-09 18:28:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2024-11-09 18:28:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:28:48,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:48,594 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, 1, 1] [2024-11-09 18:28:48,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:48,797 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 [2024-11-09 18:28:48,798 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:48,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1191994826, now seen corresponding path program 3 times [2024-11-09 18:28:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649501750] [2024-11-09 18:28:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:28:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649501750] [2024-11-09 18:28:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649501750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928496602] [2024-11-09 18:28:49,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:49,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:49,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:49,081 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) [2024-11-09 18:28:49,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:28:49,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:28:49,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:49,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 18:28:49,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:49,194 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 [2024-11-09 18:28:49,261 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-09 18:28:49,262 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 38 treesize of output 45 [2024-11-09 18:28:49,350 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-09 18:28:49,351 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 55 treesize of output 53 [2024-11-09 18:28:49,464 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-09 18:28:49,464 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 55 treesize of output 53 [2024-11-09 18:28:49,556 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-09 18:28:49,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2024-11-09 18:28:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 18:28:49,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:28:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928496602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:49,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:49,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2024-11-09 18:28:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098766676] [2024-11-09 18:28:49,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:49,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:28:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:28:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:28:49,868 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 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) [2024-11-09 18:28:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:50,552 INFO L93 Difference]: Finished difference Result 316 states and 380 transitions. [2024-11-09 18:28:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:28:50,553 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 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) Word has length 57 [2024-11-09 18:28:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:50,554 INFO L225 Difference]: With dead ends: 316 [2024-11-09 18:28:50,554 INFO L226 Difference]: Without dead ends: 182 [2024-11-09 18:28:50,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=2087, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:28:50,555 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:50,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 234 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-09 18:28:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2024-11-09 18:28:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.146341463414634) internal successors, (188), 164 states have internal predecessors, (188), 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) [2024-11-09 18:28:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2024-11-09 18:28:50,575 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 57 [2024-11-09 18:28:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:50,576 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2024-11-09 18:28:50,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 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) [2024-11-09 18:28:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2024-11-09 18:28:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:28:50,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:50,576 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:50,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:50,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:50,781 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:50,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash 305911828, now seen corresponding path program 11 times [2024-11-09 18:28:50,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:50,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572976094] [2024-11-09 18:28:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:50,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:28:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572976094] [2024-11-09 18:28:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572976094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538237135] [2024-11-09 18:28:50,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:28:50,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:50,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:50,915 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:50,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:28:51,081 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:28:51,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:51,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:28:51,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:28:51,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:28:51,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538237135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:51,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:51,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:28:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588509431] [2024-11-09 18:28:51,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:51,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:28:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:28:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:28:51,272 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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) [2024-11-09 18:28:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:51,433 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2024-11-09 18:28:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:28:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 61 [2024-11-09 18:28:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:51,434 INFO L225 Difference]: With dead ends: 224 [2024-11-09 18:28:51,434 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 18:28:51,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:28:51,435 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:51,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 103 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 18:28:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 87. [2024-11-09 18:28:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 86 states have internal predecessors, (96), 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) [2024-11-09 18:28:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-09 18:28:51,445 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 61 [2024-11-09 18:28:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:51,445 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-09 18:28:51,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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) [2024-11-09 18:28:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-09 18:28:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:28:51,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:51,446 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:51,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 18:28:51,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:51,647 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:51,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1939024329, now seen corresponding path program 12 times [2024-11-09 18:28:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:51,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356003809] [2024-11-09 18:28:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356003809] [2024-11-09 18:28:51,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356003809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704308899] [2024-11-09 18:28:51,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:28:51,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:51,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:51,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:28:51,914 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:28:51,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:51,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:28:51,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 38 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:28:52,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 60 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:28:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704308899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:52,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:52,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 24 [2024-11-09 18:28:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058315712] [2024-11-09 18:28:52,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:52,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:28:52,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:28:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:28:52,192 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 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) [2024-11-09 18:28:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:52,391 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-09 18:28:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:28:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 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 63 [2024-11-09 18:28:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:52,393 INFO L225 Difference]: With dead ends: 108 [2024-11-09 18:28:52,393 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 18:28:52,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:28:52,394 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 137 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:52,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 152 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 18:28:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2024-11-09 18:28:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 90 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2024-11-09 18:28:52,409 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 63 [2024-11-09 18:28:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:52,409 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2024-11-09 18:28:52,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 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) [2024-11-09 18:28:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2024-11-09 18:28:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:28:52,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:52,410 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:52,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:52,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 18:28:52,611 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:52,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash -346056395, now seen corresponding path program 13 times [2024-11-09 18:28:52,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:52,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286310561] [2024-11-09 18:28:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:53,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:53,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286310561] [2024-11-09 18:28:53,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286310561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:53,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023923954] [2024-11-09 18:28:53,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:28:53,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:53,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:53,500 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:53,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:28:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:53,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 18:28:53,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:53,603 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 [2024-11-09 18:28:53,717 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 [2024-11-09 18:28:53,796 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 [2024-11-09 18:28:53,891 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 [2024-11-09 18:28:54,012 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 [2024-11-09 18:28:54,151 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 [2024-11-09 18:28:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:54,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:54,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023923954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:54,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 51 [2024-11-09 18:28:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652035542] [2024-11-09 18:28:54,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:54,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 18:28:54,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 18:28:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2381, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 18:28:55,001 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2024-11-09 18:28:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:57,961 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2024-11-09 18:28:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-09 18:28:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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 67 [2024-11-09 18:28:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:57,962 INFO L225 Difference]: With dead ends: 267 [2024-11-09 18:28:57,962 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 18:28:57,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=780, Invalid=10350, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 18:28:57,965 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 134 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:57,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 883 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 18:28:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 18:28:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 205. [2024-11-09 18:28:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 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) [2024-11-09 18:28:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2024-11-09 18:28:57,996 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 67 [2024-11-09 18:28:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:57,996 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2024-11-09 18:28:57,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2024-11-09 18:28:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2024-11-09 18:28:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 18:28:57,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:57,997 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:58,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:58,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:28:58,198 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:58,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash 985667284, now seen corresponding path program 14 times [2024-11-09 18:28:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753876197] [2024-11-09 18:28:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 20 proven. 72 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753876197] [2024-11-09 18:28:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753876197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922391983] [2024-11-09 18:28:58,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:58,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:58,478 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:58,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 18:28:58,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:58,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:58,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:28:58,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:58,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922391983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:58,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:28:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80877653] [2024-11-09 18:28:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:58,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:28:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:28:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:28:58,842 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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) [2024-11-09 18:28:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:59,299 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2024-11-09 18:28:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:28:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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 69 [2024-11-09 18:28:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:59,301 INFO L225 Difference]: With dead ends: 299 [2024-11-09 18:28:59,301 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 18:28:59,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 118 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:28:59,305 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 155 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:59,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 289 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:28:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 18:28:59,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 182. [2024-11-09 18:28:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.1767955801104972) internal successors, (213), 181 states have internal predecessors, (213), 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) [2024-11-09 18:28:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 213 transitions. [2024-11-09 18:28:59,355 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 213 transitions. Word has length 69 [2024-11-09 18:28:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:59,356 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 213 transitions. [2024-11-09 18:28:59,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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) [2024-11-09 18:28:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 213 transitions. [2024-11-09 18:28:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:28:59,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:59,360 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:59,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 18:28:59,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:59,564 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:59,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1025289523, now seen corresponding path program 15 times [2024-11-09 18:28:59,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:59,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375855533] [2024-11-09 18:28:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:59,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375855533] [2024-11-09 18:28:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375855533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557536040] [2024-11-09 18:28:59,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:59,870 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:59,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 18:29:00,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 18:29:00,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:00,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:29:00,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:29:00,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:29:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557536040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:29:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962226949] [2024-11-09 18:29:00,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:00,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:29:00,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:29:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:29:00,307 INFO L87 Difference]: Start difference. First operand 182 states and 213 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2024-11-09 18:29:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:00,499 INFO L93 Difference]: Finished difference Result 270 states and 312 transitions. [2024-11-09 18:29:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:29:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 18:29:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:00,500 INFO L225 Difference]: With dead ends: 270 [2024-11-09 18:29:00,500 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 18:29:00,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:29:00,501 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 159 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:00,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 102 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:29:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 18:29:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2024-11-09 18:29:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.13) internal successors, (113), 100 states have internal predecessors, (113), 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) [2024-11-09 18:29:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2024-11-09 18:29:00,526 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 71 [2024-11-09 18:29:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:00,527 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2024-11-09 18:29:00,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2024-11-09 18:29:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2024-11-09 18:29:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:29:00,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:00,528 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:00,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:00,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:00,729 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:00,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1855887892, now seen corresponding path program 16 times [2024-11-09 18:29:00,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:00,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912589663] [2024-11-09 18:29:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:00,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:01,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912589663] [2024-11-09 18:29:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912589663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638321938] [2024-11-09 18:29:01,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:29:01,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:01,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:01,901 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:01,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 18:29:02,027 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:29:02,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:02,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 18:29:02,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:02,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:29:02,210 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 [2024-11-09 18:29:02,321 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 [2024-11-09 18:29:02,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:02,653 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 [2024-11-09 18:29:02,807 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 [2024-11-09 18:29:02,971 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 [2024-11-09 18:29:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:03,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638321938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:04,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 60 [2024-11-09 18:29:04,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854758666] [2024-11-09 18:29:04,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:04,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-09 18:29:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-09 18:29:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3339, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 18:29:04,313 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 60 states, 60 states have (on average 2.1666666666666665) internal successors, (130), 60 states have internal predecessors, (130), 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) [2024-11-09 18:29:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:09,914 INFO L93 Difference]: Finished difference Result 321 states and 382 transitions. [2024-11-09 18:29:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-09 18:29:09,919 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1666666666666665) internal successors, (130), 60 states have internal predecessors, (130), 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 77 [2024-11-09 18:29:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:09,920 INFO L225 Difference]: With dead ends: 321 [2024-11-09 18:29:09,920 INFO L226 Difference]: Without dead ends: 307 [2024-11-09 18:29:09,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4720 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1036, Invalid=16786, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 18:29:09,925 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 152 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 4865 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 5052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 4865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:09,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1597 Invalid, 5052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 4865 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 18:29:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-09 18:29:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 235. [2024-11-09 18:29:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1837606837606838) internal successors, (277), 234 states have internal predecessors, (277), 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) [2024-11-09 18:29:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 277 transitions. [2024-11-09 18:29:10,012 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 277 transitions. Word has length 77 [2024-11-09 18:29:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:10,013 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 277 transitions. [2024-11-09 18:29:10,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1666666666666665) internal successors, (130), 60 states have internal predecessors, (130), 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) [2024-11-09 18:29:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 277 transitions. [2024-11-09 18:29:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:29:10,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:10,014 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:10,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:10,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 18:29:10,214 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:10,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1984970611, now seen corresponding path program 4 times [2024-11-09 18:29:10,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:10,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121029975] [2024-11-09 18:29:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:29:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121029975] [2024-11-09 18:29:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121029975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:10,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070071563] [2024-11-09 18:29:10,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:29:10,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:10,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:10,884 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:10,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 18:29:10,999 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:29:10,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:11,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 18:29:11,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:11,042 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 13 [2024-11-09 18:29:11,099 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-09 18:29:11,099 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 35 treesize of output 26 [2024-11-09 18:29:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 18:29:11,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:11,407 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 53 treesize of output 47 [2024-11-09 18:29:11,419 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-09 18:29:11,420 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 144 treesize of output 114 [2024-11-09 18:29:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 18:29:11,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070071563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:11,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:11,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 17] total 36 [2024-11-09 18:29:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614940389] [2024-11-09 18:29:11,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:11,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 18:29:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 18:29:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:29:11,449 INFO L87 Difference]: Start difference. First operand 235 states and 277 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 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) [2024-11-09 18:29:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:12,510 INFO L93 Difference]: Finished difference Result 397 states and 477 transitions. [2024-11-09 18:29:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:29:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 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 77 [2024-11-09 18:29:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:12,512 INFO L225 Difference]: With dead ends: 397 [2024-11-09 18:29:12,512 INFO L226 Difference]: Without dead ends: 354 [2024-11-09 18:29:12,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=449, Invalid=2973, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:29:12,513 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 309 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:12,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 521 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:29:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-09 18:29:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 313. [2024-11-09 18:29:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.1923076923076923) internal successors, (372), 312 states have internal predecessors, (372), 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) [2024-11-09 18:29:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 372 transitions. [2024-11-09 18:29:12,570 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 372 transitions. Word has length 77 [2024-11-09 18:29:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:12,570 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 372 transitions. [2024-11-09 18:29:12,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 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) [2024-11-09 18:29:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 372 transitions. [2024-11-09 18:29:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:29:12,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:12,571 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:12,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:12,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 18:29:12,775 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:12,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1062287028, now seen corresponding path program 4 times [2024-11-09 18:29:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:12,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857290425] [2024-11-09 18:29:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 20 proven. 94 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857290425] [2024-11-09 18:29:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857290425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181550379] [2024-11-09 18:29:13,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:29:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:13,284 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:13,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 18:29:13,404 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:29:13,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:13,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 18:29:13,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:13,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 18:29:13,428 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 36 treesize of output 16 [2024-11-09 18:29:13,512 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2024-11-09 18:29:13,513 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 30 treesize of output 37 [2024-11-09 18:29:13,608 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2024-11-09 18:29:13,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2024-11-09 18:29:13,779 INFO L349 Elim1Store]: treesize reduction 91, result has 33.1 percent of original size [2024-11-09 18:29:13,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 86 [2024-11-09 18:29:14,030 INFO L349 Elim1Store]: treesize reduction 91, result has 33.1 percent of original size [2024-11-09 18:29:14,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 115 [2024-11-09 18:29:14,351 INFO L349 Elim1Store]: treesize reduction 16, result has 62.8 percent of original size [2024-11-09 18:29:14,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 109 [2024-11-09 18:29:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 18:29:14,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 18:29:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181550379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:15,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 15] total 46 [2024-11-09 18:29:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303130911] [2024-11-09 18:29:15,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:15,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 18:29:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 18:29:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 18:29:15,026 INFO L87 Difference]: Start difference. First operand 313 states and 372 transitions. Second operand has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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) [2024-11-09 18:29:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:17,523 INFO L93 Difference]: Finished difference Result 586 states and 707 transitions. [2024-11-09 18:29:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 18:29:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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 77 [2024-11-09 18:29:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:17,525 INFO L225 Difference]: With dead ends: 586 [2024-11-09 18:29:17,525 INFO L226 Difference]: Without dead ends: 408 [2024-11-09 18:29:17,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1515, Invalid=7605, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 18:29:17,526 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 222 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:17,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 582 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:29:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-09 18:29:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 329. [2024-11-09 18:29:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.1951219512195121) internal successors, (392), 328 states have internal predecessors, (392), 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) [2024-11-09 18:29:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 392 transitions. [2024-11-09 18:29:17,590 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 392 transitions. Word has length 77 [2024-11-09 18:29:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:17,590 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 392 transitions. [2024-11-09 18:29:17,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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) [2024-11-09 18:29:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 392 transitions. [2024-11-09 18:29:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 18:29:17,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:17,591 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:17,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:17,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 18:29:17,792 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:17,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 726785267, now seen corresponding path program 17 times [2024-11-09 18:29:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316117748] [2024-11-09 18:29:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 30 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316117748] [2024-11-09 18:29:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316117748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542994162] [2024-11-09 18:29:18,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:29:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:18,027 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 18:29:19,700 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:29:19,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:19,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:29:19,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:19,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542994162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:20,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:29:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612412939] [2024-11-09 18:29:20,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:20,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:29:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:29:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:29:20,061 INFO L87 Difference]: Start difference. First operand 329 states and 392 transitions. Second operand has 26 states, 26 states have (on average 4.653846153846154) internal successors, (121), 26 states have internal predecessors, (121), 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) [2024-11-09 18:29:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:20,638 INFO L93 Difference]: Finished difference Result 456 states and 537 transitions. [2024-11-09 18:29:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:29:20,638 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.653846153846154) internal successors, (121), 26 states have internal predecessors, (121), 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 79 [2024-11-09 18:29:20,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:20,640 INFO L225 Difference]: With dead ends: 456 [2024-11-09 18:29:20,640 INFO L226 Difference]: Without dead ends: 421 [2024-11-09 18:29:20,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 135 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:29:20,641 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 143 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:20,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 361 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:29:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-09 18:29:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 286. [2024-11-09 18:29:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.2) internal successors, (342), 285 states have internal predecessors, (342), 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) [2024-11-09 18:29:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 342 transitions. [2024-11-09 18:29:20,694 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 342 transitions. Word has length 79 [2024-11-09 18:29:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:20,695 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 342 transitions. [2024-11-09 18:29:20,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.653846153846154) internal successors, (121), 26 states have internal predecessors, (121), 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) [2024-11-09 18:29:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 342 transitions. [2024-11-09 18:29:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 18:29:20,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:20,695 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:20,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:20,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 18:29:20,900 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:20,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 354559634, now seen corresponding path program 18 times [2024-11-09 18:29:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015322373] [2024-11-09 18:29:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015322373] [2024-11-09 18:29:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015322373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053144496] [2024-11-09 18:29:21,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:29:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:21,075 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:21,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 18:29:21,386 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-09 18:29:21,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:21,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:29:21,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:29:21,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:29:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053144496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:21,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:29:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463600934] [2024-11-09 18:29:21,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:21,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:29:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:29:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:29:21,714 INFO L87 Difference]: Start difference. First operand 286 states and 342 transitions. Second operand has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 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) [2024-11-09 18:29:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:22,026 INFO L93 Difference]: Finished difference Result 423 states and 498 transitions. [2024-11-09 18:29:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:29:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 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 81 [2024-11-09 18:29:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:22,028 INFO L225 Difference]: With dead ends: 423 [2024-11-09 18:29:22,028 INFO L226 Difference]: Without dead ends: 175 [2024-11-09 18:29:22,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:29:22,029 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 200 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:22,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 139 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:29:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-09 18:29:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2024-11-09 18:29:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 145 states have internal predecessors, (168), 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) [2024-11-09 18:29:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2024-11-09 18:29:22,057 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 81 [2024-11-09 18:29:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:22,057 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2024-11-09 18:29:22,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 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) [2024-11-09 18:29:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2024-11-09 18:29:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 18:29:22,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:22,058 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:22,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 18:29:22,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:22,263 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:22,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1696436019, now seen corresponding path program 19 times [2024-11-09 18:29:22,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:22,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023756201] [2024-11-09 18:29:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:23,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:23,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023756201] [2024-11-09 18:29:23,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023756201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:23,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309004717] [2024-11-09 18:29:23,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:29:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:23,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:23,358 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:23,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 18:29:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:23,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 18:29:23,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:23,495 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 [2024-11-09 18:29:23,649 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 [2024-11-09 18:29:23,745 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 [2024-11-09 18:29:23,870 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 [2024-11-09 18:29:23,988 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 [2024-11-09 18:29:24,116 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 [2024-11-09 18:29:24,290 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 [2024-11-09 18:29:24,484 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 [2024-11-09 18:29:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:24,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309004717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:26,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:26,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 26, 26] total 69 [2024-11-09 18:29:26,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042307835] [2024-11-09 18:29:26,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:26,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-09 18:29:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-09 18:29:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4459, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 18:29:26,101 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 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) [2024-11-09 18:29:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:34,598 INFO L93 Difference]: Finished difference Result 506 states and 605 transitions. [2024-11-09 18:29:34,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-09 18:29:34,598 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 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 87 [2024-11-09 18:29:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:34,600 INFO L225 Difference]: With dead ends: 506 [2024-11-09 18:29:34,600 INFO L226 Difference]: Without dead ends: 492 [2024-11-09 18:29:34,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7462 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1331, Invalid=25729, Unknown=0, NotChecked=0, Total=27060 [2024-11-09 18:29:34,601 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 197 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 7537 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 7805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 7537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:34,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2420 Invalid, 7805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 7537 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 18:29:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-09 18:29:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 359. [2024-11-09 18:29:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.2011173184357542) internal successors, (430), 358 states have internal predecessors, (430), 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) [2024-11-09 18:29:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 430 transitions. [2024-11-09 18:29:34,676 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 430 transitions. Word has length 87 [2024-11-09 18:29:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:34,676 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 430 transitions. [2024-11-09 18:29:34,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 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) [2024-11-09 18:29:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 430 transitions. [2024-11-09 18:29:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 18:29:34,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:34,677 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:34,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:34,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:34,882 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:34,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1825518738, now seen corresponding path program 5 times [2024-11-09 18:29:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605239027] [2024-11-09 18:29:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:34,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 209 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:29:36,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605239027] [2024-11-09 18:29:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605239027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067723727] [2024-11-09 18:29:36,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:29:36,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:36,266 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 18:29:44,366 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:29:44,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:44,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 18:29:44,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:44,584 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 13 [2024-11-09 18:29:44,675 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-09 18:29:44,675 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 35 treesize of output 26 [2024-11-09 18:29:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 153 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-09 18:29:45,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:46,055 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 53 treesize of output 47 [2024-11-09 18:29:46,066 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-09 18:29:46,067 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 72 treesize of output 58 [2024-11-09 18:29:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 153 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-09 18:29:46,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067723727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:46,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:46,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 18, 19] total 62 [2024-11-09 18:29:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652767418] [2024-11-09 18:29:46,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:46,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 18:29:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 18:29:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3544, Unknown=1, NotChecked=0, Total=3782 [2024-11-09 18:29:46,093 INFO L87 Difference]: Start difference. First operand 359 states and 430 transitions. Second operand has 62 states, 62 states have (on average 2.7903225806451615) internal successors, (173), 62 states have internal predecessors, (173), 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) [2024-11-09 18:29:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:48,764 INFO L93 Difference]: Finished difference Result 784 states and 947 transitions. [2024-11-09 18:29:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 18:29:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.7903225806451615) internal successors, (173), 62 states have internal predecessors, (173), 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 87 [2024-11-09 18:29:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:48,767 INFO L225 Difference]: With dead ends: 784 [2024-11-09 18:29:48,767 INFO L226 Difference]: Without dead ends: 737 [2024-11-09 18:29:48,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=663, Invalid=7892, Unknown=1, NotChecked=0, Total=8556 [2024-11-09 18:29:48,768 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 268 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:48,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1167 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 18:29:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-09 18:29:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 551. [2024-11-09 18:29:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 1.210909090909091) internal successors, (666), 550 states have internal predecessors, (666), 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) [2024-11-09 18:29:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 666 transitions. [2024-11-09 18:29:48,908 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 666 transitions. Word has length 87 [2024-11-09 18:29:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:48,908 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 666 transitions. [2024-11-09 18:29:48,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.7903225806451615) internal successors, (173), 62 states have internal predecessors, (173), 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) [2024-11-09 18:29:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 666 transitions. [2024-11-09 18:29:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 18:29:48,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:48,910 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:48,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-09 18:29:49,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 18:29:49,114 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:49,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1138125997, now seen corresponding path program 5 times [2024-11-09 18:29:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:49,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61224213] [2024-11-09 18:29:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:49,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 30 proven. 124 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:49,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61224213] [2024-11-09 18:29:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61224213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343508977] [2024-11-09 18:29:49,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:29:49,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:49,962 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:49,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 18:29:52,581 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:29:52,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:52,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 18:29:52,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:52,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 18:29:52,682 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-09 18:29:52,683 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 33 treesize of output 13 [2024-11-09 18:29:52,716 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-09 18:29:52,717 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 33 treesize of output 13 [2024-11-09 18:29:52,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:29:52,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2024-11-09 18:29:52,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:29:52,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-09 18:29:52,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:29:52,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-09 18:29:52,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:29:52,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-09 18:29:52,883 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 9 treesize of output 3 [2024-11-09 18:29:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 54 proven. 90 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 18:29:52,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:52,916 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 12 treesize of output 4 [2024-11-09 18:29:53,141 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 [2024-11-09 18:29:53,144 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 20 treesize of output 16 [2024-11-09 18:29:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 55 proven. 95 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:29:53,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343508977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:53,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 17] total 40 [2024-11-09 18:29:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172398345] [2024-11-09 18:29:53,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:53,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 18:29:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 18:29:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:29:53,160 INFO L87 Difference]: Start difference. First operand 551 states and 666 transitions. Second operand has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 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) [2024-11-09 18:29:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:53,818 INFO L93 Difference]: Finished difference Result 605 states and 725 transitions. [2024-11-09 18:29:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:29:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 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 87 [2024-11-09 18:29:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:53,819 INFO L225 Difference]: With dead ends: 605 [2024-11-09 18:29:53,819 INFO L226 Difference]: Without dead ends: 339 [2024-11-09 18:29:53,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=393, Invalid=2687, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:29:53,820 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 102 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:53,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 394 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:29:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-09 18:29:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 328. [2024-11-09 18:29:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.1590214067278288) internal successors, (379), 327 states have internal predecessors, (379), 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) [2024-11-09 18:29:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2024-11-09 18:29:53,889 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 87 [2024-11-09 18:29:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:53,889 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2024-11-09 18:29:53,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 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) [2024-11-09 18:29:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2024-11-09 18:29:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 18:29:53,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:53,890 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:53,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-09 18:29:54,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:54,095 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:54,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash -950139054, now seen corresponding path program 20 times [2024-11-09 18:29:54,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:54,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096243201] [2024-11-09 18:29:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:54,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 42 proven. 128 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:54,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096243201] [2024-11-09 18:29:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096243201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438179885] [2024-11-09 18:29:54,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:29:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:54,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:54,304 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:54,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 18:29:54,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:29:54,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:54,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:29:54,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 114 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:54,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 114 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438179885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:54,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:54,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-09 18:29:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033126153] [2024-11-09 18:29:54,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:54,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:29:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:29:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:29:54,780 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 29 states, 29 states have (on average 3.5517241379310347) internal successors, (103), 29 states have internal predecessors, (103), 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) [2024-11-09 18:29:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:55,432 INFO L93 Difference]: Finished difference Result 460 states and 527 transitions. [2024-11-09 18:29:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:29:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.5517241379310347) internal successors, (103), 29 states have internal predecessors, (103), 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 89 [2024-11-09 18:29:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:55,434 INFO L225 Difference]: With dead ends: 460 [2024-11-09 18:29:55,434 INFO L226 Difference]: Without dead ends: 421 [2024-11-09 18:29:55,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 152 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:29:55,434 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 171 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:55,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 365 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:29:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-09 18:29:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 281. [2024-11-09 18:29:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1642857142857144) internal successors, (326), 280 states have internal predecessors, (326), 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) [2024-11-09 18:29:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 326 transitions. [2024-11-09 18:29:55,493 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 326 transitions. Word has length 89 [2024-11-09 18:29:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:55,493 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 326 transitions. [2024-11-09 18:29:55,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.5517241379310347) internal successors, (103), 29 states have internal predecessors, (103), 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) [2024-11-09 18:29:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 326 transitions. [2024-11-09 18:29:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 18:29:55,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:55,494 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:55,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:55,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:55,699 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:55,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash 450065457, now seen corresponding path program 21 times [2024-11-09 18:29:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133301314] [2024-11-09 18:29:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 102 proven. 82 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:29:55,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133301314] [2024-11-09 18:29:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133301314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011134805] [2024-11-09 18:29:55,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:29:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:55,910 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:55,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 18:29:56,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 18:29:56,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:56,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 18:29:56,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 154 proven. 56 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:29:56,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 84 proven. 138 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:29:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011134805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:56,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 24] total 37 [2024-11-09 18:29:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807140537] [2024-11-09 18:29:56,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:56,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 18:29:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 18:29:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:29:56,768 INFO L87 Difference]: Start difference. First operand 281 states and 326 transitions. Second operand has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 37 states have internal predecessors, (124), 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) [2024-11-09 18:29:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:57,304 INFO L93 Difference]: Finished difference Result 430 states and 494 transitions. [2024-11-09 18:29:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 18:29:57,304 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 37 states have internal predecessors, (124), 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 91 [2024-11-09 18:29:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:57,305 INFO L225 Difference]: With dead ends: 430 [2024-11-09 18:29:57,305 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 18:29:57,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 16 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=757, Invalid=2665, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:29:57,307 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 330 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:57,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 245 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:29:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 18:29:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 160. [2024-11-09 18:29:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1446540880503144) internal successors, (182), 159 states have internal predecessors, (182), 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) [2024-11-09 18:29:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2024-11-09 18:29:57,342 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 91 [2024-11-09 18:29:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:57,342 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2024-11-09 18:29:57,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 37 states have internal predecessors, (124), 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) [2024-11-09 18:29:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2024-11-09 18:29:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 18:29:57,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:57,343 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:57,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 18:29:57,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 18:29:57,544 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:57,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1568692078, now seen corresponding path program 22 times [2024-11-09 18:29:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760212719] [2024-11-09 18:29:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 18:29:58,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760212719] [2024-11-09 18:29:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760212719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832507507] [2024-11-09 18:29:58,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:29:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:58,854 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:58,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 18:29:59,050 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:29:59,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:59,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-09 18:29:59,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:59,061 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 [2024-11-09 18:29:59,233 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 [2024-11-09 18:29:59,339 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 [2024-11-09 18:29:59,465 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 [2024-11-09 18:29:59,616 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