./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s22if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s22if.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 0a4adccbfdb287a751e5c33c3e59569f71741de562bf1a42797adb485c4a44d2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:56:08,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:56:08,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:56:08,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:56:08,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:56:08,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:56:08,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:56:08,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:56:08,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:56:08,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:56:08,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:56:08,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:56:08,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:56:08,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:56:08,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:56:08,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:56:08,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:56:08,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:56:08,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:56:08,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:56:08,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:56:08,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:56:08,546 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:56:08,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:56:08,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:56:08,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:56:08,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:56:08,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:56:08,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:56:08,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a4adccbfdb287a751e5c33c3e59569f71741de562bf1a42797adb485c4a44d2 [2024-11-16 02:56:08,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:56:08,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:56:08,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:56:08,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:56:08,759 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:56:08,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s22if.c [2024-11-16 02:56:09,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:56:10,047 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:56:10,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s22if.c [2024-11-16 02:56:10,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38c55a6f/33a9e1bf51b042c4be7c288ec5e1111f/FLAGc5e53928b [2024-11-16 02:56:10,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38c55a6f/33a9e1bf51b042c4be7c288ec5e1111f [2024-11-16 02:56:10,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:56:10,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:56:10,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:56:10,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:56:10,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:56:10,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec38bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10, skipping insertion in model container [2024-11-16 02:56:10,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:56:10,654 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/s22if.c[588,601] [2024-11-16 02:56:10,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:56:10,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:56:10,693 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/s22if.c[588,601] [2024-11-16 02:56:10,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:56:10,719 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:56:10,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10 WrapperNode [2024-11-16 02:56:10,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:56:10,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:56:10,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:56:10,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:56:10,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,748 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-16 02:56:10,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:56:10,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:56:10,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:56:10,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:56:10,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,781 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]. [2024-11-16 02:56:10,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,788 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:56:10,800 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:56:10,800 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:56:10,800 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:56:10,801 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (1/1) ... [2024-11-16 02:56:10,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:56:10,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:10,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:56:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:56:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:56:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:56:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:56:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:56:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:56:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:56:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:56:10,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:56:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:56:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:56:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:56:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:56:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:56:10,933 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:56:10,934 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:56:11,043 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-16 02:56:11,049 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:56:11,050 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:56:11,058 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:56:11,059 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:56:11,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:56:11 BoogieIcfgContainer [2024-11-16 02:56:11,059 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:56:11,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:56:11,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:56:11,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:56:11,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:56:10" (1/3) ... [2024-11-16 02:56:11,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c286c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:56:11, skipping insertion in model container [2024-11-16 02:56:11,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:10" (2/3) ... [2024-11-16 02:56:11,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c286c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:56:11, skipping insertion in model container [2024-11-16 02:56:11,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:56:11" (3/3) ... [2024-11-16 02:56:11,065 INFO L112 eAbstractionObserver]: Analyzing ICFG s22if.c [2024-11-16 02:56:11,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:56:11,077 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:56:11,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:56:11,129 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;@24c7f756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:56:11,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:56:11,133 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) [2024-11-16 02:56:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:56:11,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:11,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:11,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:11,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1088486860, now seen corresponding path program 1 times [2024-11-16 02:56:11,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:11,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288433254] [2024-11-16 02:56:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:11,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288433254] [2024-11-16 02:56:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288433254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:56:11,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:56:11,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:56:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225881628] [2024-11-16 02:56:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:56:11,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:56:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:56:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:56:11,295 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) [2024-11-16 02:56:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:11,310 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-16 02:56:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:56:11,314 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 [2024-11-16 02:56:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:11,319 INFO L225 Difference]: With dead ends: 49 [2024-11-16 02:56:11,319 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 02:56:11,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:56:11,325 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 [2024-11-16 02:56:11,327 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] [2024-11-16 02:56:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 02:56:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 02:56:11,350 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) [2024-11-16 02:56:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-16 02:56:11,353 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2024-11-16 02:56:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:11,353 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-16 02:56:11,353 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) [2024-11-16 02:56:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-16 02:56:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 02:56:11,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:11,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:11,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:56:11,355 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:11,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash 632050842, now seen corresponding path program 1 times [2024-11-16 02:56:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421790758] [2024-11-16 02:56:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421790758] [2024-11-16 02:56:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421790758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:56:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:56:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:56:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753331108] [2024-11-16 02:56:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:56:11,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:56:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:56:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:56:11,579 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) [2024-11-16 02:56:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:11,638 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-16 02:56:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:56:11,639 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 [2024-11-16 02:56:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:11,640 INFO L225 Difference]: With dead ends: 47 [2024-11-16 02:56:11,640 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:56:11,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:56:11,641 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 [2024-11-16 02:56:11,642 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] [2024-11-16 02:56:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:56:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-16 02:56:11,645 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) [2024-11-16 02:56:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-16 02:56:11,646 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2024-11-16 02:56:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:11,646 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-16 02:56:11,647 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) [2024-11-16 02:56:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-16 02:56:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:56:11,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:11,647 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] [2024-11-16 02:56:11,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:56:11,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:11,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2142199865, now seen corresponding path program 1 times [2024-11-16 02:56:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:11,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079137623] [2024-11-16 02:56:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079137623] [2024-11-16 02:56:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079137623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162156088] [2024-11-16 02:56:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:12,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:12,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:12,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:56:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:12,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:56:12,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:12,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:12,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:12,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162156088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:12,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:12,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-16 02:56:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858128321] [2024-11-16 02:56:12,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:12,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:56:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:56:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:12,567 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) [2024-11-16 02:56:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:12,814 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2024-11-16 02:56:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:12,814 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 [2024-11-16 02:56:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:12,815 INFO L225 Difference]: With dead ends: 59 [2024-11-16 02:56:12,815 INFO L226 Difference]: Without dead ends: 54 [2024-11-16 02:56:12,816 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 [2024-11-16 02:56:12,817 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:12,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 98 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-16 02:56:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2024-11-16 02:56:12,821 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) [2024-11-16 02:56:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-16 02:56:12,822 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2024-11-16 02:56:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:12,822 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-16 02:56:12,822 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) [2024-11-16 02:56:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-16 02:56:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:56:12,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:12,823 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] [2024-11-16 02:56:12,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:56:13,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:13,029 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:13,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:13,030 INFO L85 PathProgramCache]: Analyzing trace with hash -409957096, now seen corresponding path program 1 times [2024-11-16 02:56:13,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:13,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826633979] [2024-11-16 02:56:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:13,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:13,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826633979] [2024-11-16 02:56:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826633979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777834858] [2024-11-16 02:56:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:13,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:13,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:13,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:13,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:56:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:13,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:56:13,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:13,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:13,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:13,534 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 [2024-11-16 02:56:13,542 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:13,542 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 [2024-11-16 02:56:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:13,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777834858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:13,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:13,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 15 [2024-11-16 02:56:13,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026413890] [2024-11-16 02:56:13,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:13,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 02:56:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 02:56:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:56:13,555 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:13,670 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2024-11-16 02:56:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:56:13,671 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 02:56:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:13,673 INFO L225 Difference]: With dead ends: 111 [2024-11-16 02:56:13,673 INFO L226 Difference]: Without dead ends: 95 [2024-11-16 02:56:13,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:56:13,674 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:13,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 136 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-16 02:56:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2024-11-16 02:56:13,684 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) [2024-11-16 02:56:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-16 02:56:13,685 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2024-11-16 02:56:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:13,685 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-16 02:56:13,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-16 02:56:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:56:13,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:13,686 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] [2024-11-16 02:56:13,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:56:13,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:56:13,891 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:13,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:13,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1097594713, now seen corresponding path program 1 times [2024-11-16 02:56:13,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:13,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098397335] [2024-11-16 02:56:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098397335] [2024-11-16 02:56:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098397335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967317541] [2024-11-16 02:56:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:14,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:14,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:14,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:56:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:14,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 02:56:14,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:14,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:14,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-16 02:56:14,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-16 02:56:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967317541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:14,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 02:56:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569732483] [2024-11-16 02:56:14,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:14,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:56:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:56:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:56:14,166 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) [2024-11-16 02:56:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:14,231 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2024-11-16 02:56:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:56:14,231 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 [2024-11-16 02:56:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:14,232 INFO L225 Difference]: With dead ends: 100 [2024-11-16 02:56:14,232 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 02:56:14,232 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 [2024-11-16 02:56:14,232 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:14,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 02:56:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-16 02:56:14,238 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) [2024-11-16 02:56:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-16 02:56:14,239 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2024-11-16 02:56:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:14,239 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-16 02:56:14,239 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) [2024-11-16 02:56:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-16 02:56:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:56:14,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:14,240 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] [2024-11-16 02:56:14,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:56:14,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:14,441 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:14,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1727867096, now seen corresponding path program 2 times [2024-11-16 02:56:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989153811] [2024-11-16 02:56:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989153811] [2024-11-16 02:56:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989153811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124935569] [2024-11-16 02:56:14,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:14,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:14,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:14,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:56:14,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:14,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:14,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:56:14,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124935569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:14,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:14,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:56:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872469923] [2024-11-16 02:56:14,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:14,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:56:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:56:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:14,682 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) [2024-11-16 02:56:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:14,809 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2024-11-16 02:56:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:56:14,809 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 [2024-11-16 02:56:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:14,810 INFO L225 Difference]: With dead ends: 110 [2024-11-16 02:56:14,810 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 02:56:14,810 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 [2024-11-16 02:56:14,811 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:14,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 02:56:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2024-11-16 02:56:14,823 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) [2024-11-16 02:56:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-16 02:56:14,826 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 29 [2024-11-16 02:56:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:14,826 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-16 02:56:14,826 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) [2024-11-16 02:56:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-16 02:56:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 02:56:14,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:14,827 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] [2024-11-16 02:56:14,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:56:15,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:15,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:15,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash 107565623, now seen corresponding path program 3 times [2024-11-16 02:56:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580390979] [2024-11-16 02:56:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:15,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:15,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580390979] [2024-11-16 02:56:15,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580390979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:15,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570262375] [2024-11-16 02:56:15,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:15,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:15,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:15,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:56:15,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:56:15,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:15,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:56:15,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:15,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570262375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:15,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:15,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:56:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684120475] [2024-11-16 02:56:15,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:15,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:56:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:56:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:15,259 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) [2024-11-16 02:56:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:15,337 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-16 02:56:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:56:15,337 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 [2024-11-16 02:56:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:15,337 INFO L225 Difference]: With dead ends: 100 [2024-11-16 02:56:15,338 INFO L226 Difference]: Without dead ends: 51 [2024-11-16 02:56:15,338 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 [2024-11-16 02:56:15,338 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:15,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-16 02:56:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-16 02:56:15,342 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) [2024-11-16 02:56:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-16 02:56:15,343 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 31 [2024-11-16 02:56:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:15,343 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-16 02:56:15,343 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) [2024-11-16 02:56:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-16 02:56:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 02:56:15,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:15,344 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] [2024-11-16 02:56:15,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:15,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:15,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:15,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2130604056, now seen corresponding path program 4 times [2024-11-16 02:56:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692097998] [2024-11-16 02:56:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692097998] [2024-11-16 02:56:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692097998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879771504] [2024-11-16 02:56:15,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:15,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:15,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:15,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:56:15,944 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:15,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:15,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 02:56:15,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:15,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:16,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:16,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:16,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879771504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:16,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 31 [2024-11-16 02:56:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942321203] [2024-11-16 02:56:16,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:16,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:56:16,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:56:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:56:16,509 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 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) [2024-11-16 02:56:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:17,363 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2024-11-16 02:56:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-16 02:56:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 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 [2024-11-16 02:56:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:17,365 INFO L225 Difference]: With dead ends: 148 [2024-11-16 02:56:17,365 INFO L226 Difference]: Without dead ends: 141 [2024-11-16 02:56:17,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=493, Invalid=2477, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:56:17,367 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 93 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:17,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 268 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:56:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-16 02:56:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 92. [2024-11-16 02:56:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 91 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2024-11-16 02:56:17,378 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 37 [2024-11-16 02:56:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:17,378 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2024-11-16 02:56:17,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 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) [2024-11-16 02:56:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2024-11-16 02:56:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 02:56:17,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:17,381 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] [2024-11-16 02:56:17,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:56:17,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:17,586 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:17,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash -421552905, now seen corresponding path program 1 times [2024-11-16 02:56:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:17,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014917653] [2024-11-16 02:56:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:17,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:17,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014917653] [2024-11-16 02:56:17,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014917653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519970329] [2024-11-16 02:56:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:17,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:17,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:17,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:56:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:17,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 02:56:17,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:17,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:17,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:18,021 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 [2024-11-16 02:56:18,027 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:18,027 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 [2024-11-16 02:56:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519970329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:18,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-16 02:56:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520453828] [2024-11-16 02:56:18,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:18,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:56:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:56:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:18,046 INFO L87 Difference]: Start difference. First operand 92 states and 112 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) [2024-11-16 02:56:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:18,202 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2024-11-16 02:56:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:56:18,203 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 [2024-11-16 02:56:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:18,203 INFO L225 Difference]: With dead ends: 141 [2024-11-16 02:56:18,204 INFO L226 Difference]: Without dead ends: 132 [2024-11-16 02:56:18,204 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 [2024-11-16 02:56:18,204 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 96 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:18,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 174 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-16 02:56:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2024-11-16 02:56:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 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) [2024-11-16 02:56:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-11-16 02:56:18,215 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 37 [2024-11-16 02:56:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:18,215 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-11-16 02:56:18,215 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) [2024-11-16 02:56:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-11-16 02:56:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 02:56:18,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:18,220 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] [2024-11-16 02:56:18,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:56:18,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:18,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:18,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1266024776, now seen corresponding path program 1 times [2024-11-16 02:56:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533762782] [2024-11-16 02:56:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:18,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533762782] [2024-11-16 02:56:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533762782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120155471] [2024-11-16 02:56:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:18,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:18,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:56:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:18,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 02:56:18,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:18,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:18,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:56:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:18,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:18,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:56:18,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:56:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:18,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120155471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:18,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:18,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-16 02:56:18,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421877581] [2024-11-16 02:56:18,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:18,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:18,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:18,779 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:18,883 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2024-11-16 02:56:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:56:18,883 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 [2024-11-16 02:56:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:18,884 INFO L225 Difference]: With dead ends: 154 [2024-11-16 02:56:18,884 INFO L226 Difference]: Without dead ends: 109 [2024-11-16 02:56:18,884 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 [2024-11-16 02:56:18,885 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:18,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 147 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-16 02:56:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2024-11-16 02:56:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-16 02:56:18,897 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 37 [2024-11-16 02:56:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:18,897 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-16 02:56:18,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-16 02:56:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:56:18,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:18,899 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] [2024-11-16 02:56:18,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:56:19,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:56:19,104 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:19,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1512088938, now seen corresponding path program 5 times [2024-11-16 02:56:19,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:19,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696102625] [2024-11-16 02:56:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:19,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696102625] [2024-11-16 02:56:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696102625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767828513] [2024-11-16 02:56:19,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:19,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:19,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:19,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:56:19,255 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:56:19,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:19,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:19,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:19,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:19,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767828513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:19,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:19,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:19,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800150597] [2024-11-16 02:56:19,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:19,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:19,391 INFO L87 Difference]: Start difference. First operand 98 states and 116 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) [2024-11-16 02:56:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:19,505 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-11-16 02:56:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:56:19,505 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 [2024-11-16 02:56:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:19,506 INFO L225 Difference]: With dead ends: 138 [2024-11-16 02:56:19,506 INFO L226 Difference]: Without dead ends: 70 [2024-11-16 02:56:19,506 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 [2024-11-16 02:56:19,506 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:19,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 67 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-16 02:56:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2024-11-16 02:56:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 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) [2024-11-16 02:56:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-11-16 02:56:19,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 41 [2024-11-16 02:56:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:19,513 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-11-16 02:56:19,513 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) [2024-11-16 02:56:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-11-16 02:56:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 02:56:19,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:19,514 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:19,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:56:19,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:19,715 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:19,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1232060985, now seen corresponding path program 6 times [2024-11-16 02:56:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48812129] [2024-11-16 02:56:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48812129] [2024-11-16 02:56:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48812129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440543887] [2024-11-16 02:56:19,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:19,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:19,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:56:19,869 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:56:19,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:19,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:19,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:19,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440543887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:19,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:19,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826323666] [2024-11-16 02:56:19,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:19,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:19,995 INFO L87 Difference]: Start difference. First operand 56 states and 63 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) [2024-11-16 02:56:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:20,114 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-16 02:56:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:56:20,114 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 43 [2024-11-16 02:56:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:20,115 INFO L225 Difference]: With dead ends: 70 [2024-11-16 02:56:20,115 INFO L226 Difference]: Without dead ends: 65 [2024-11-16 02:56:20,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:20,115 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:20,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 106 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-16 02:56:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-16 02:56:20,119 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) [2024-11-16 02:56:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-16 02:56:20,120 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 43 [2024-11-16 02:56:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:20,120 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-16 02:56:20,120 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) [2024-11-16 02:56:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-16 02:56:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:56:20,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:20,121 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] [2024-11-16 02:56:20,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:56:20,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 02:56:20,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:20,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:20,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1428730935, now seen corresponding path program 7 times [2024-11-16 02:56:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159119205] [2024-11-16 02:56:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159119205] [2024-11-16 02:56:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159119205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723997255] [2024-11-16 02:56:20,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:56:20,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:20,743 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:20,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:56:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:20,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:56:20,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:20,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:20,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:20,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:21,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:21,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723997255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:21,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:21,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 33 [2024-11-16 02:56:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623611558] [2024-11-16 02:56:21,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:21,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:56:21,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:56:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:56:21,426 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) [2024-11-16 02:56:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:22,446 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2024-11-16 02:56:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:56:22,446 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 [2024-11-16 02:56:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:22,447 INFO L225 Difference]: With dead ends: 161 [2024-11-16 02:56:22,447 INFO L226 Difference]: Without dead ends: 150 [2024-11-16 02:56:22,448 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 [2024-11-16 02:56:22,448 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:22,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 419 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:56:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-16 02:56:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2024-11-16 02:56:22,462 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) [2024-11-16 02:56:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2024-11-16 02:56:22,463 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 47 [2024-11-16 02:56:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:22,463 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2024-11-16 02:56:22,464 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) [2024-11-16 02:56:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2024-11-16 02:56:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:56:22,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:22,464 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] [2024-11-16 02:56:22,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:56:22,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:56:22,669 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:22,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1123426026, now seen corresponding path program 2 times [2024-11-16 02:56:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358505518] [2024-11-16 02:56:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358505518] [2024-11-16 02:56:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358505518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512755596] [2024-11-16 02:56:22,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:22,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:56:23,047 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:23,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:23,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 02:56:23,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:23,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:23,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:23,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-16 02:56:23,226 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:23,226 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 [2024-11-16 02:56:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512755596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:23,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 23 [2024-11-16 02:56:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847349847] [2024-11-16 02:56:23,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:23,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:56:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:56:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:56:23,256 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 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) [2024-11-16 02:56:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:23,495 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2024-11-16 02:56:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:23,496 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 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) Word has length 47 [2024-11-16 02:56:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:23,496 INFO L225 Difference]: With dead ends: 179 [2024-11-16 02:56:23,496 INFO L226 Difference]: Without dead ends: 170 [2024-11-16 02:56:23,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:56:23,498 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:23,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 314 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-16 02:56:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2024-11-16 02:56:23,508 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) [2024-11-16 02:56:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2024-11-16 02:56:23,508 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 47 [2024-11-16 02:56:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:23,508 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2024-11-16 02:56:23,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 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) [2024-11-16 02:56:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2024-11-16 02:56:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:56:23,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:23,510 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] [2024-11-16 02:56:23,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:56:23,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:56:23,712 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:23,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash 121338455, now seen corresponding path program 2 times [2024-11-16 02:56:23,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:23,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997515060] [2024-11-16 02:56:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:23,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:23,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:23,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997515060] [2024-11-16 02:56:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997515060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:23,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933897760] [2024-11-16 02:56:23,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:23,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:23,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:23,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:56:23,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:23,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:23,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 02:56:23,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:24,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:24,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:56:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:56:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:24,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:24,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:56:24,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:56:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:24,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933897760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:24,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:24,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-16 02:56:24,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36836094] [2024-11-16 02:56:24,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:24,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:56:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:24,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:56:24,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:24,147 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) [2024-11-16 02:56:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:24,275 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-16 02:56:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:24,275 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 [2024-11-16 02:56:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:24,276 INFO L225 Difference]: With dead ends: 213 [2024-11-16 02:56:24,276 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:56:24,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:56:24,277 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:24,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 206 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:56:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-16 02:56:24,288 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) [2024-11-16 02:56:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2024-11-16 02:56:24,289 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 47 [2024-11-16 02:56:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:24,289 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2024-11-16 02:56:24,289 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) [2024-11-16 02:56:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2024-11-16 02:56:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 02:56:24,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:24,290 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] [2024-11-16 02:56:24,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:24,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 02:56:24,490 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:24,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -423430314, now seen corresponding path program 8 times [2024-11-16 02:56:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:24,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064603234] [2024-11-16 02:56:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064603234] [2024-11-16 02:56:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064603234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575747193] [2024-11-16 02:56:24,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:24,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:24,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:24,603 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:24,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:56:24,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:24,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:24,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:56:24,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:24,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575747193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:24,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:56:24,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807603132] [2024-11-16 02:56:24,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:24,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:56:24,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:56:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:56:24,806 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) [2024-11-16 02:56:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:24,996 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2024-11-16 02:56:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:56:24,996 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 [2024-11-16 02:56:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:24,997 INFO L225 Difference]: With dead ends: 201 [2024-11-16 02:56:24,997 INFO L226 Difference]: Without dead ends: 177 [2024-11-16 02:56:24,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:56:24,998 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:24,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 152 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-16 02:56:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2024-11-16 02:56:25,007 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) [2024-11-16 02:56:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-16 02:56:25,007 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 49 [2024-11-16 02:56:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:25,008 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-16 02:56:25,008 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) [2024-11-16 02:56:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-16 02:56:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 02:56:25,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:25,008 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] [2024-11-16 02:56:25,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 02:56:25,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:25,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:25,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash 385644341, now seen corresponding path program 9 times [2024-11-16 02:56:25,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:25,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921444808] [2024-11-16 02:56:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:25,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921444808] [2024-11-16 02:56:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921444808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485512989] [2024-11-16 02:56:25,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:25,298 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:25,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:56:25,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:56:25,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:25,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:56:25,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:25,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:56:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485512989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:25,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:25,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:56:25,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885877991] [2024-11-16 02:56:25,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:25,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:56:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:56:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:56:25,542 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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) [2024-11-16 02:56:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:25,664 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2024-11-16 02:56:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:56:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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 51 [2024-11-16 02:56:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:25,666 INFO L225 Difference]: With dead ends: 180 [2024-11-16 02:56:25,666 INFO L226 Difference]: Without dead ends: 79 [2024-11-16 02:56:25,666 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 [2024-11-16 02:56:25,667 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:25,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 112 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-16 02:56:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-16 02:56:25,678 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) [2024-11-16 02:56:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-16 02:56:25,679 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 51 [2024-11-16 02:56:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:25,679 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-16 02:56:25,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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) [2024-11-16 02:56:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-16 02:56:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 02:56:25,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:25,679 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] [2024-11-16 02:56:25,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:25,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:56:25,880 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:25,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 398548118, now seen corresponding path program 10 times [2024-11-16 02:56:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986191669] [2024-11-16 02:56:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986191669] [2024-11-16 02:56:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986191669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746689259] [2024-11-16 02:56:26,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:26,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:56:26,576 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:26,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:26,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-16 02:56:26,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:26,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:26,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:26,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:26,971 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 [2024-11-16 02:56:27,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:27,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746689259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:27,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 53 [2024-11-16 02:56:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604287323] [2024-11-16 02:56:27,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:27,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 02:56:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 02:56:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 02:56:27,802 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:30,790 INFO L93 Difference]: Finished difference Result 281 states and 347 transitions. [2024-11-16 02:56:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-16 02:56:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 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 [2024-11-16 02:56:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:30,792 INFO L225 Difference]: With dead ends: 281 [2024-11-16 02:56:30,792 INFO L226 Difference]: Without dead ends: 274 [2024-11-16 02:56:30,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4072 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1461, Invalid=13301, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 02:56:30,795 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 233 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:30,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 820 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:56:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-16 02:56:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2024-11-16 02:56:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 182 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2024-11-16 02:56:30,811 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 57 [2024-11-16 02:56:30,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:30,811 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2024-11-16 02:56:30,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:30,811 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2024-11-16 02:56:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 02:56:30,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:30,812 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] [2024-11-16 02:56:30,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:31,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:56:31,016 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:31,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2141358453, now seen corresponding path program 3 times [2024-11-16 02:56:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335615603] [2024-11-16 02:56:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335615603] [2024-11-16 02:56:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335615603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138038591] [2024-11-16 02:56:31,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:31,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:31,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:56:31,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:56:31,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:31,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:56:31,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:31,519 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 [2024-11-16 02:56:31,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:31,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-16 02:56:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 02:56:31,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 02:56:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138038591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:31,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 31 [2024-11-16 02:56:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404374090] [2024-11-16 02:56:31,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:31,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:56:31,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:56:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:56:31,831 INFO L87 Difference]: Start difference. First operand 183 states and 220 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) [2024-11-16 02:56:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:32,996 INFO L93 Difference]: Finished difference Result 345 states and 423 transitions. [2024-11-16 02:56:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-16 02:56:32,996 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 [2024-11-16 02:56:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:32,997 INFO L225 Difference]: With dead ends: 345 [2024-11-16 02:56:32,998 INFO L226 Difference]: Without dead ends: 336 [2024-11-16 02:56:32,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=998, Invalid=4552, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:56:32,999 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 321 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:32,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 292 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:56:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-16 02:56:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 273. [2024-11-16 02:56:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.2279411764705883) internal successors, (334), 272 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 334 transitions. [2024-11-16 02:56:33,028 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 334 transitions. Word has length 57 [2024-11-16 02:56:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:33,028 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 334 transitions. [2024-11-16 02:56:33,028 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) [2024-11-16 02:56:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 334 transitions. [2024-11-16 02:56:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 02:56:33,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:33,029 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] [2024-11-16 02:56:33,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:33,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:33,230 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:33,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1191994826, now seen corresponding path program 3 times [2024-11-16 02:56:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367272022] [2024-11-16 02:56:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:33,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:33,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367272022] [2024-11-16 02:56:33,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367272022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:33,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535560093] [2024-11-16 02:56:33,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:33,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:33,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:33,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:33,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:56:34,120 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:56:34,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:34,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 02:56:34,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:34,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-16 02:56:34,182 INFO L349 Elim1Store]: treesize reduction 28, result has 39.1 percent of original size [2024-11-16 02:56:34,182 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 36 treesize of output 22 [2024-11-16 02:56:34,250 INFO L349 Elim1Store]: treesize reduction 28, result has 39.1 percent of original size [2024-11-16 02:56:34,251 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 42 treesize of output 28 [2024-11-16 02:56:34,306 INFO L349 Elim1Store]: treesize reduction 28, result has 39.1 percent of original size [2024-11-16 02:56:34,308 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 42 treesize of output 28 [2024-11-16 02:56:34,360 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-16 02:56:34,361 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 [2024-11-16 02:56:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 02:56:34,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535560093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:34,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10, 11] total 35 [2024-11-16 02:56:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225506975] [2024-11-16 02:56:34,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:34,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 02:56:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 02:56:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:56:34,722 INFO L87 Difference]: Start difference. First operand 273 states and 334 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:35,359 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2024-11-16 02:56:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:56:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 02:56:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:35,360 INFO L225 Difference]: With dead ends: 290 [2024-11-16 02:56:35,360 INFO L226 Difference]: Without dead ends: 201 [2024-11-16 02:56:35,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=588, Invalid=2274, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 02:56:35,362 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:35,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 220 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-16 02:56:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 186. [2024-11-16 02:56:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1837837837837837) internal successors, (219), 185 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2024-11-16 02:56:35,382 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 57 [2024-11-16 02:56:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:35,382 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2024-11-16 02:56:35,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2024-11-16 02:56:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 02:56:35,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:35,383 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] [2024-11-16 02:56:35,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:35,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:35,583 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:35,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 305911828, now seen corresponding path program 11 times [2024-11-16 02:56:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099497889] [2024-11-16 02:56:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099497889] [2024-11-16 02:56:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099497889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544191680] [2024-11-16 02:56:35,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:35,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:35,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:35,697 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:35,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:56:35,916 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:56:35,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:35,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:56:35,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:36,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:36,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544191680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:36,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:36,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 02:56:36,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562734559] [2024-11-16 02:56:36,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:36,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:56:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:56:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:56:36,080 INFO L87 Difference]: Start difference. First operand 186 states and 219 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) [2024-11-16 02:56:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:36,221 INFO L93 Difference]: Finished difference Result 254 states and 295 transitions. [2024-11-16 02:56:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:36,221 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 [2024-11-16 02:56:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:36,222 INFO L225 Difference]: With dead ends: 254 [2024-11-16 02:56:36,222 INFO L226 Difference]: Without dead ends: 113 [2024-11-16 02:56:36,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:56:36,223 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:36,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 119 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-16 02:56:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 87. [2024-11-16 02:56:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2024-11-16 02:56:36,232 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 61 [2024-11-16 02:56:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:36,232 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2024-11-16 02:56:36,232 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) [2024-11-16 02:56:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2024-11-16 02:56:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 02:56:36,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:36,232 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] [2024-11-16 02:56:36,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:36,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:36,433 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:36,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1939024329, now seen corresponding path program 12 times [2024-11-16 02:56:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:36,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478774529] [2024-11-16 02:56:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478774529] [2024-11-16 02:56:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478774529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477473930] [2024-11-16 02:56:36,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:36,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:36,560 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:36,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:56:36,680 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 02:56:36,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:36,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:56:36,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 38 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:36,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 60 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:36,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477473930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:36,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:36,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 24 [2024-11-16 02:56:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920562357] [2024-11-16 02:56:36,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:36,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 02:56:36,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 02:56:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:56:36,985 INFO L87 Difference]: Start difference. First operand 87 states and 97 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) [2024-11-16 02:56:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:37,163 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2024-11-16 02:56:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:37,164 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 [2024-11-16 02:56:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:37,164 INFO L225 Difference]: With dead ends: 113 [2024-11-16 02:56:37,164 INFO L226 Difference]: Without dead ends: 108 [2024-11-16 02:56:37,165 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 [2024-11-16 02:56:37,165 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 140 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:37,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 150 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-16 02:56:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-11-16 02:56:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 90 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2024-11-16 02:56:37,175 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 63 [2024-11-16 02:56:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:37,175 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2024-11-16 02:56:37,176 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) [2024-11-16 02:56:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2024-11-16 02:56:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 02:56:37,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:37,176 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] [2024-11-16 02:56:37,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:37,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 02:56:37,381 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:37,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -346056395, now seen corresponding path program 13 times [2024-11-16 02:56:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:37,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025379729] [2024-11-16 02:56:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:37,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025379729] [2024-11-16 02:56:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025379729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506209277] [2024-11-16 02:56:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:56:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:38,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:38,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:56:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:38,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-16 02:56:38,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:38,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:38,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:38,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:38,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:38,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:38,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:38,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506209277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:39,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:39,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 51 [2024-11-16 02:56:39,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608687428] [2024-11-16 02:56:39,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:39,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 02:56:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 02:56:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2381, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:56:39,273 INFO L87 Difference]: Start difference. First operand 91 states and 102 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) [2024-11-16 02:56:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:41,897 INFO L93 Difference]: Finished difference Result 274 states and 325 transitions. [2024-11-16 02:56:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-16 02:56:41,897 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 [2024-11-16 02:56:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:41,898 INFO L225 Difference]: With dead ends: 274 [2024-11-16 02:56:41,898 INFO L226 Difference]: Without dead ends: 260 [2024-11-16 02:56:41,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=779, Invalid=10351, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 02:56:41,901 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 116 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:41,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1115 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 02:56:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-16 02:56:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 205. [2024-11-16 02:56:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.1813725490196079) internal successors, (241), 204 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 241 transitions. [2024-11-16 02:56:41,926 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 241 transitions. Word has length 67 [2024-11-16 02:56:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:41,926 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 241 transitions. [2024-11-16 02:56:41,926 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) [2024-11-16 02:56:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 241 transitions. [2024-11-16 02:56:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 02:56:41,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:41,927 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:41,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:42,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 02:56:42,127 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:42,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1508507221, now seen corresponding path program 4 times [2024-11-16 02:56:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:42,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575675665] [2024-11-16 02:56:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575675665] [2024-11-16 02:56:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575675665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758662138] [2024-11-16 02:56:42,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:42,497 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:42,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 02:56:42,586 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:42,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:42,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:56:42,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:42,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:56:42,607 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 [2024-11-16 02:56:42,678 INFO L349 Elim1Store]: treesize reduction 22, result has 42.1 percent of original size [2024-11-16 02:56:42,678 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 28 treesize of output 20 [2024-11-16 02:56:42,739 INFO L349 Elim1Store]: treesize reduction 28, result has 39.1 percent of original size [2024-11-16 02:56:42,740 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 40 treesize of output 26 [2024-11-16 02:56:42,829 INFO L349 Elim1Store]: treesize reduction 28, result has 39.1 percent of original size [2024-11-16 02:56:42,830 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 57 treesize of output 43 [2024-11-16 02:56:42,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:42,955 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 52 treesize of output 45 [2024-11-16 02:56:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 02:56:43,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 28 proven. 40 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 02:56:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758662138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:43,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 14] total 41 [2024-11-16 02:56:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254075360] [2024-11-16 02:56:43,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:43,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 02:56:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 02:56:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:56:43,296 INFO L87 Difference]: Start difference. First operand 205 states and 241 transitions. Second operand has 41 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 41 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:45,299 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2024-11-16 02:56:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 02:56:45,300 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 41 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 02:56:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:45,300 INFO L225 Difference]: With dead ends: 360 [2024-11-16 02:56:45,300 INFO L226 Difference]: Without dead ends: 266 [2024-11-16 02:56:45,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1329, Invalid=6153, Unknown=0, NotChecked=0, Total=7482 [2024-11-16 02:56:45,302 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 187 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:45,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 442 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:56:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-16 02:56:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 213. [2024-11-16 02:56:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.1839622641509433) internal successors, (251), 212 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2024-11-16 02:56:45,331 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 67 [2024-11-16 02:56:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:45,332 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2024-11-16 02:56:45,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 41 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2024-11-16 02:56:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 02:56:45,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:45,332 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] [2024-11-16 02:56:45,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:45,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:45,533 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:45,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:45,534 INFO L85 PathProgramCache]: Analyzing trace with hash 985667284, now seen corresponding path program 14 times [2024-11-16 02:56:45,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:45,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852602270] [2024-11-16 02:56:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:45,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 20 proven. 72 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852602270] [2024-11-16 02:56:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852602270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617764115] [2024-11-16 02:56:45,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:45,673 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:45,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 02:56:45,763 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:45,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:45,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:56:45,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:45,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617764115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:45,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:56:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572661914] [2024-11-16 02:56:45,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:45,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:56:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:56:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:56:45,944 INFO L87 Difference]: Start difference. First operand 213 states and 251 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) [2024-11-16 02:56:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:46,250 INFO L93 Difference]: Finished difference Result 323 states and 378 transitions. [2024-11-16 02:56:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:56:46,251 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 [2024-11-16 02:56:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:46,252 INFO L225 Difference]: With dead ends: 323 [2024-11-16 02:56:46,252 INFO L226 Difference]: Without dead ends: 292 [2024-11-16 02:56:46,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 118 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:56:46,252 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 153 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:46,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 224 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-16 02:56:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 190. [2024-11-16 02:56:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 189 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2024-11-16 02:56:46,278 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 69 [2024-11-16 02:56:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:46,279 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2024-11-16 02:56:46,279 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) [2024-11-16 02:56:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2024-11-16 02:56:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:56:46,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:46,279 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] [2024-11-16 02:56:46,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-16 02:56:46,480 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 [2024-11-16 02:56:46,480 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:46,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1025289523, now seen corresponding path program 15 times [2024-11-16 02:56:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829744056] [2024-11-16 02:56:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:46,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:46,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829744056] [2024-11-16 02:56:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829744056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:46,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692637330] [2024-11-16 02:56:46,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:46,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:46,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:46,618 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) [2024-11-16 02:56:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 02:56:46,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 02:56:46,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:46,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:56:46,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:46,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692637330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:47,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:56:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629335654] [2024-11-16 02:56:47,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:47,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:56:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:56:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:56:47,021 INFO L87 Difference]: Start difference. First operand 190 states and 225 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) [2024-11-16 02:56:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:47,173 INFO L93 Difference]: Finished difference Result 294 states and 343 transitions. [2024-11-16 02:56:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:47,173 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 [2024-11-16 02:56:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:47,174 INFO L225 Difference]: With dead ends: 294 [2024-11-16 02:56:47,174 INFO L226 Difference]: Without dead ends: 128 [2024-11-16 02:56:47,174 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 [2024-11-16 02:56:47,175 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 154 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:47,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 110 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-16 02:56:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2024-11-16 02:56:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 104 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2024-11-16 02:56:47,188 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 71 [2024-11-16 02:56:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:47,188 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2024-11-16 02:56:47,188 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) [2024-11-16 02:56:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2024-11-16 02:56:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 02:56:47,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:47,189 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] [2024-11-16 02:56:47,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:47,389 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 [2024-11-16 02:56:47,389 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:47,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1855887892, now seen corresponding path program 16 times [2024-11-16 02:56:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283958784] [2024-11-16 02:56:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:48,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283958784] [2024-11-16 02:56:48,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283958784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231622017] [2024-11-16 02:56:48,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:48,184 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) [2024-11-16 02:56:48,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 02:56:48,299 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:48,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:48,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-16 02:56:48,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:48,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:48,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:48,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:48,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:48,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:48,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:48,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:49,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231622017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:49,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 60 [2024-11-16 02:56:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120481836] [2024-11-16 02:56:49,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:49,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:56:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:56:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3339, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:56:49,936 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 60 states, 60 states have (on average 2.15) internal successors, (129), 60 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:54,164 INFO L93 Difference]: Finished difference Result 340 states and 407 transitions. [2024-11-16 02:56:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-16 02:56:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.15) internal successors, (129), 60 states have internal predecessors, (129), 0 states have call successors, (0), 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 [2024-11-16 02:56:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:54,165 INFO L225 Difference]: With dead ends: 340 [2024-11-16 02:56:54,165 INFO L226 Difference]: Without dead ends: 326 [2024-11-16 02:56:54,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4699 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1037, Invalid=16785, Unknown=0, NotChecked=0, Total=17822 [2024-11-16 02:56:54,166 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 159 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 5005 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 5213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:54,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1640 Invalid, 5213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5005 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 02:56:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-16 02:56:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 243. [2024-11-16 02:56:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1942148760330578) internal successors, (289), 242 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2024-11-16 02:56:54,203 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 77 [2024-11-16 02:56:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:54,204 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2024-11-16 02:56:54,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.15) internal successors, (129), 60 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2024-11-16 02:56:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 02:56:54,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:54,204 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] [2024-11-16 02:56:54,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-16 02:56:54,404 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 [2024-11-16 02:56:54,405 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:54,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1984970611, now seen corresponding path program 4 times [2024-11-16 02:56:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261453819] [2024-11-16 02:56:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:56:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261453819] [2024-11-16 02:56:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261453819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583980307] [2024-11-16 02:56:54,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:54,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:54,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:54,975 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) [2024-11-16 02:56:54,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 02:56:55,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:55,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:55,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 02:56:55,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:55,119 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 [2024-11-16 02:56:55,174 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-16 02:56:55,174 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 [2024-11-16 02:56:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 02:56:55,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:55,483 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 36 treesize of output 32 [2024-11-16 02:56:55,488 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:55,488 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 52 treesize of output 42 [2024-11-16 02:56:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 02:56:55,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583980307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:55,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:55,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 17] total 36 [2024-11-16 02:56:55,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704224061] [2024-11-16 02:56:55,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:55,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 02:56:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 02:56:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:56:55,522 INFO L87 Difference]: Start difference. First operand 243 states and 289 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) [2024-11-16 02:56:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:56,394 INFO L93 Difference]: Finished difference Result 423 states and 511 transitions. [2024-11-16 02:56:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 02:56:56,395 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 [2024-11-16 02:56:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:56,397 INFO L225 Difference]: With dead ends: 423 [2024-11-16 02:56:56,397 INFO L226 Difference]: Without dead ends: 380 [2024-11-16 02:56:56,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=455, Invalid=2967, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:56:56,398 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 235 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:56,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 559 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:56:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-16 02:56:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 337. [2024-11-16 02:56:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.2023809523809523) internal successors, (404), 336 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 404 transitions. [2024-11-16 02:56:56,459 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 404 transitions. Word has length 77 [2024-11-16 02:56:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:56,459 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 404 transitions. [2024-11-16 02:56:56,459 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) [2024-11-16 02:56:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 404 transitions. [2024-11-16 02:56:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 02:56:56,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:56,460 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] [2024-11-16 02:56:56,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:56,660 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 [2024-11-16 02:56:56,661 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:56,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 896657076, now seen corresponding path program 5 times [2024-11-16 02:56:56,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:56,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833219609] [2024-11-16 02:56:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:56,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 112 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:57,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833219609] [2024-11-16 02:56:57,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833219609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:57,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380414943] [2024-11-16 02:56:57,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:57,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:57,159 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) [2024-11-16 02:56:57,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-16 02:56:57,486 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 02:56:57,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:57,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 02:56:57,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:57,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:56:57,549 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-16 02:56:57,550 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 [2024-11-16 02:56:57,572 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-16 02:56:57,573 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 [2024-11-16 02:56:57,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-16 02:56:57,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:56:57,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:56:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 02:56:57,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:57,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-16 02:56:57,822 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 [2024-11-16 02:56:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 41 proven. 63 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 02:56:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380414943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:57,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 35 [2024-11-16 02:56:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117478099] [2024-11-16 02:56:57,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:57,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 02:56:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 02:56:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:56:57,835 INFO L87 Difference]: Start difference. First operand 337 states and 404 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 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) [2024-11-16 02:56:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:58,295 INFO L93 Difference]: Finished difference Result 578 states and 704 transitions. [2024-11-16 02:56:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:56:58,295 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 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) Word has length 77 [2024-11-16 02:56:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:58,297 INFO L225 Difference]: With dead ends: 578 [2024-11-16 02:56:58,297 INFO L226 Difference]: Without dead ends: 348 [2024-11-16 02:56:58,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=1419, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:56:58,302 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:58,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 389 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:56:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-16 02:56:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 329. [2024-11-16 02:56:58,369 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) [2024-11-16 02:56:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 392 transitions. [2024-11-16 02:56:58,370 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 392 transitions. Word has length 77 [2024-11-16 02:56:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:58,370 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 392 transitions. [2024-11-16 02:56:58,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 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) [2024-11-16 02:56:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 392 transitions. [2024-11-16 02:56:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 02:56:58,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:58,371 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] [2024-11-16 02:56:58,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:58,575 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 [2024-11-16 02:56:58,576 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:58,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash 726785267, now seen corresponding path program 17 times [2024-11-16 02:56:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230284353] [2024-11-16 02:56:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 30 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:58,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230284353] [2024-11-16 02:56:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230284353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:58,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584471196] [2024-11-16 02:56:58,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:58,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:58,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:58,744 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) [2024-11-16 02:56:58,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-16 02:56:59,570 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-16 02:56:59,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:59,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:56:59,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:59,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584471196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:59,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:59,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-16 02:56:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534335075] [2024-11-16 02:56:59,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:59,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:56:59,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:56:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:56:59,859 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) [2024-11-16 02:57:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:00,352 INFO L93 Difference]: Finished difference Result 456 states and 537 transitions. [2024-11-16 02:57:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:57:00,353 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 [2024-11-16 02:57:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:00,354 INFO L225 Difference]: With dead ends: 456 [2024-11-16 02:57:00,354 INFO L226 Difference]: Without dead ends: 421 [2024-11-16 02:57:00,355 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 [2024-11-16 02:57:00,355 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 143 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:00,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 373 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:57:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-16 02:57:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 286. [2024-11-16 02:57:00,400 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) [2024-11-16 02:57:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 342 transitions. [2024-11-16 02:57:00,401 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 342 transitions. Word has length 79 [2024-11-16 02:57:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:00,401 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 342 transitions. [2024-11-16 02:57:00,401 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) [2024-11-16 02:57:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 342 transitions. [2024-11-16 02:57:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 02:57:00,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:00,402 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] [2024-11-16 02:57:00,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:00,602 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 [2024-11-16 02:57:00,603 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:00,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:00,603 INFO L85 PathProgramCache]: Analyzing trace with hash 354559634, now seen corresponding path program 18 times [2024-11-16 02:57:00,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:00,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507267651] [2024-11-16 02:57:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:00,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:57:00,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507267651] [2024-11-16 02:57:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507267651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929065708] [2024-11-16 02:57:00,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:00,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:00,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:00,754 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) [2024-11-16 02:57:00,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-16 02:57:00,996 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-16 02:57:00,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:00,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:57:00,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:57:01,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:57:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929065708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:01,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-16 02:57:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973768302] [2024-11-16 02:57:01,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:01,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:57:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:57:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:57:01,254 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) [2024-11-16 02:57:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:01,428 INFO L93 Difference]: Finished difference Result 423 states and 498 transitions. [2024-11-16 02:57:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 02:57:01,429 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 [2024-11-16 02:57:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:01,429 INFO L225 Difference]: With dead ends: 423 [2024-11-16 02:57:01,429 INFO L226 Difference]: Without dead ends: 175 [2024-11-16 02:57:01,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:57:01,430 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 215 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:01,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 111 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-16 02:57:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2024-11-16 02:57:01,451 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) [2024-11-16 02:57:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2024-11-16 02:57:01,452 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 81 [2024-11-16 02:57:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:01,452 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2024-11-16 02:57:01,452 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) [2024-11-16 02:57:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2024-11-16 02:57:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 02:57:01,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:01,456 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] [2024-11-16 02:57:01,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:01,656 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 [2024-11-16 02:57:01,656 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:01,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1696436019, now seen corresponding path program 19 times [2024-11-16 02:57:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541135823] [2024-11-16 02:57:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:02,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:02,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541135823] [2024-11-16 02:57:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541135823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:02,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156345037] [2024-11-16 02:57:02,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:57:02,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:02,579 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) [2024-11-16 02:57:02,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-16 02:57:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:02,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-16 02:57:02,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:02,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:57:02,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:02,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:03,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156345037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:04,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:04,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 26, 26] total 69 [2024-11-16 02:57:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316671402] [2024-11-16 02:57:04,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:04,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 02:57:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 02:57:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4459, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 02:57:04,976 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) [2024-11-16 02:57:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:11,370 INFO L93 Difference]: Finished difference Result 506 states and 605 transitions. [2024-11-16 02:57:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-16 02:57:11,371 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 [2024-11-16 02:57:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:11,372 INFO L225 Difference]: With dead ends: 506 [2024-11-16 02:57:11,372 INFO L226 Difference]: Without dead ends: 492 [2024-11-16 02:57:11,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7463 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1330, Invalid=25730, Unknown=0, NotChecked=0, Total=27060 [2024-11-16 02:57:11,373 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 215 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 6309 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 6598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 6309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:11,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2029 Invalid, 6598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 6309 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 02:57:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-16 02:57:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 359. [2024-11-16 02:57:11,440 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) [2024-11-16 02:57:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 430 transitions. [2024-11-16 02:57:11,441 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 430 transitions. Word has length 87 [2024-11-16 02:57:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:11,441 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 430 transitions. [2024-11-16 02:57:11,441 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) [2024-11-16 02:57:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 430 transitions. [2024-11-16 02:57:11,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 02:57:11,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:11,442 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] [2024-11-16 02:57:11,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-16 02:57:11,642 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 [2024-11-16 02:57:11,642 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:11,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1825518738, now seen corresponding path program 5 times [2024-11-16 02:57:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210345326] [2024-11-16 02:57:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 209 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:57:12,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210345326] [2024-11-16 02:57:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210345326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:12,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867709693] [2024-11-16 02:57:12,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:57:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:12,329 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) [2024-11-16 02:57:12,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-16 02:57:15,635 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-16 02:57:15,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:15,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 02:57:15,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:15,692 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 [2024-11-16 02:57:15,743 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-16 02:57:15,744 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 [2024-11-16 02:57:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 153 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-16 02:57:15,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:16,086 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 36 treesize of output 32 [2024-11-16 02:57:16,090 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:57:16,091 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 52 treesize of output 42 [2024-11-16 02:57:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 40 proven. 153 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-16 02:57:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867709693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:16,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:16,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 19] total 42 [2024-11-16 02:57:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070067714] [2024-11-16 02:57:16,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:16,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 02:57:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 02:57:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 02:57:16,118 INFO L87 Difference]: Start difference. First operand 359 states and 430 transitions. Second operand has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:17,222 INFO L93 Difference]: Finished difference Result 651 states and 789 transitions. [2024-11-16 02:57:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-16 02:57:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 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 [2024-11-16 02:57:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:17,224 INFO L225 Difference]: With dead ends: 651 [2024-11-16 02:57:17,224 INFO L226 Difference]: Without dead ends: 604 [2024-11-16 02:57:17,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=571, Invalid=4259, Unknown=0, NotChecked=0, Total=4830 [2024-11-16 02:57:17,225 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 343 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:17,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 647 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:57:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-16 02:57:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 551. [2024-11-16 02:57:17,342 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) [2024-11-16 02:57:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 666 transitions. [2024-11-16 02:57:17,343 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 666 transitions. Word has length 87 [2024-11-16 02:57:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:17,343 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 666 transitions. [2024-11-16 02:57:17,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 666 transitions. [2024-11-16 02:57:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 02:57:17,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:17,344 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] [2024-11-16 02:57:17,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:17,545 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 [2024-11-16 02:57:17,545 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:17,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1138125997, now seen corresponding path program 6 times [2024-11-16 02:57:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:17,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200287083] [2024-11-16 02:57:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 30 proven. 124 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200287083] [2024-11-16 02:57:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200287083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685705395] [2024-11-16 02:57:18,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:18,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:18,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:18,072 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) [2024-11-16 02:57:18,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-16 02:57:18,636 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-16 02:57:18,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:18,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-16 02:57:18,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:18,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:57:18,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:57:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 52 proven. 92 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-16 02:57:18,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:19,307 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 32 treesize of output 30 [2024-11-16 02:57:19,309 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 822 treesize of output 790 [2024-11-16 02:57:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 33 proven. 212 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 02:57:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685705395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:19,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 23] total 52 [2024-11-16 02:57:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850688233] [2024-11-16 02:57:19,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:19,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-16 02:57:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-16 02:57:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2373, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 02:57:19,400 INFO L87 Difference]: Start difference. First operand 551 states and 666 transitions. Second operand has 52 states, 52 states have (on average 3.1538461538461537) internal successors, (164), 52 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:20,130 INFO L93 Difference]: Finished difference Result 605 states and 725 transitions. [2024-11-16 02:57:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 02:57:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.1538461538461537) internal successors, (164), 52 states have internal predecessors, (164), 0 states have call successors, (0), 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 [2024-11-16 02:57:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:20,132 INFO L225 Difference]: With dead ends: 605 [2024-11-16 02:57:20,132 INFO L226 Difference]: Without dead ends: 339 [2024-11-16 02:57:20,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=4033, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 02:57:20,133 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 63 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:20,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 670 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:57:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-16 02:57:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 328. [2024-11-16 02:57:20,193 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) [2024-11-16 02:57:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2024-11-16 02:57:20,194 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 87 [2024-11-16 02:57:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:20,194 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2024-11-16 02:57:20,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.1538461538461537) internal successors, (164), 52 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2024-11-16 02:57:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:57:20,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:20,195 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] [2024-11-16 02:57:20,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:20,395 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 [2024-11-16 02:57:20,395 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:20,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash -950139054, now seen corresponding path program 20 times [2024-11-16 02:57:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303686259] [2024-11-16 02:57:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 42 proven. 128 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:20,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303686259] [2024-11-16 02:57:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303686259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965997438] [2024-11-16 02:57:20,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:57:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:20,618 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) [2024-11-16 02:57:20,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-16 02:57:20,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:57:20,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:20,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:57:20,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 114 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:20,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 114 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965997438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:21,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-16 02:57:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354362035] [2024-11-16 02:57:21,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:21,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:57:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:57:21,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:57:21,031 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) [2024-11-16 02:57:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:21,522 INFO L93 Difference]: Finished difference Result 460 states and 527 transitions. [2024-11-16 02:57:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 02:57:21,522 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 [2024-11-16 02:57:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:21,524 INFO L225 Difference]: With dead ends: 460 [2024-11-16 02:57:21,524 INFO L226 Difference]: Without dead ends: 421 [2024-11-16 02:57:21,524 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 [2024-11-16 02:57:21,524 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 194 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:21,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 347 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:57:21,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-16 02:57:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 281. [2024-11-16 02:57:21,574 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) [2024-11-16 02:57:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 326 transitions. [2024-11-16 02:57:21,575 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 326 transitions. Word has length 89 [2024-11-16 02:57:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:21,575 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 326 transitions. [2024-11-16 02:57:21,575 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) [2024-11-16 02:57:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 326 transitions. [2024-11-16 02:57:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-16 02:57:21,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:21,576 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] [2024-11-16 02:57:21,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:21,776 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 [2024-11-16 02:57:21,777 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:21,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash 450065457, now seen corresponding path program 21 times [2024-11-16 02:57:21,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376238636] [2024-11-16 02:57:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:21,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 102 proven. 82 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:21,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376238636] [2024-11-16 02:57:21,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376238636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714274015] [2024-11-16 02:57:21,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:21,983 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) [2024-11-16 02:57:21,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-16 02:57:22,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-16 02:57:22,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:22,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:57:22,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 128 proven. 56 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:22,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 128 proven. 56 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-16 02:57:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714274015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:22,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-16 02:57:22,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776771973] [2024-11-16 02:57:22,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:22,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:57:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:57:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:57:22,558 INFO L87 Difference]: Start difference. First operand 281 states and 326 transitions. Second operand has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:22,772 INFO L93 Difference]: Finished difference Result 430 states and 494 transitions. [2024-11-16 02:57:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:57:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2024-11-16 02:57:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:22,774 INFO L225 Difference]: With dead ends: 430 [2024-11-16 02:57:22,774 INFO L226 Difference]: Without dead ends: 189 [2024-11-16 02:57:22,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 157 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:57:22,775 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 311 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:22,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 139 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:57:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-16 02:57:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 160. [2024-11-16 02:57:22,804 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) [2024-11-16 02:57:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2024-11-16 02:57:22,804 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 91 [2024-11-16 02:57:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:22,805 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2024-11-16 02:57:22,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2024-11-16 02:57:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-16 02:57:22,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:22,805 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] [2024-11-16 02:57:22,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-16 02:57:23,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-16 02:57:23,006 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:23,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1568692078, now seen corresponding path program 22 times [2024-11-16 02:57:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945972176] [2024-11-16 02:57:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-16 02:57:24,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945972176] [2024-11-16 02:57:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945972176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304087425] [2024-11-16 02:57:24,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:57:24,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:24,164 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:24,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-16 02:57:24,331 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:57:24,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:24,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-16 02:57:24,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:24,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:57:24,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:24,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:24,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:24,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:24,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:25,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:25,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:25,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-16 02:57:25,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-16 02:57:27,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304087425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:27,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:27,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 29, 29] total 78 [2024-11-16 02:57:27,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252276279] [2024-11-16 02:57:27,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:27,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-16 02:57:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-16 02:57:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=5741, Unknown=0, NotChecked=0, Total=6006 [2024-11-16 02:57:27,361 INFO L87 Difference]: Start difference. First operand 160 states and 182 transitions. Second operand has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 78 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) [2024-11-16 02:57:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:35,068 INFO L93 Difference]: Finished difference Result 514 states and 596 transitions. [2024-11-16 02:57:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-16 02:57:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 78 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) Word has length 97 [2024-11-16 02:57:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:35,069 INFO L225 Difference]: With dead ends: 514 [2024-11-16 02:57:35,069 INFO L226 Difference]: Without dead ends: 500 [2024-11-16 02:57:35,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8097 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1329, Invalid=28773, Unknown=0, NotChecked=0, Total=30102 [2024-11-16 02:57:35,071 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 180 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 7176 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 7427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 7176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:35,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 2332 Invalid, 7427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 7176 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 02:57:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-16 02:57:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 354. [2024-11-16 02:57:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.161473087818697) internal successors, (410), 353 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:57:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 410 transitions. [2024-11-16 02:57:35,148 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 410 transitions. Word has length 97 [2024-11-16 02:57:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:35,148 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 410 transitions. [2024-11-16 02:57:35,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 78 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) [2024-11-16 02:57:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 410 transitions. [2024-11-16 02:57:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-16 02:57:35,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:35,149 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:35,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-16 02:57:35,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-16 02:57:35,350 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:35,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1439609359, now seen corresponding path program 6 times [2024-11-16 02:57:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574021287] [2024-11-16 02:57:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 47 proven. 278 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:57:36,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574021287] [2024-11-16 02:57:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574021287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281163700] [2024-11-16 02:57:36,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:57:36,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:36,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:36,105 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:36,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-16 02:57:37,464 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:57:37,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:37,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:57:37,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:37,489 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 [2024-11-16 02:57:37,536 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 [2024-11-16 02:57:37,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:37,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-16 02:57:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 52 proven. 60 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-16 02:57:37,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 52 proven. 60 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-16 02:57:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281163700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:37,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:37,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 13, 13] total 45 [2024-11-16 02:57:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268410857] [2024-11-16 02:57:37,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:37,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 02:57:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 02:57:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1761, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:57:37,966 INFO L87 Difference]: Start difference. First operand 354 states and 410 transitions. Second operand has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)