./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs2.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/brs2.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 fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:50:38,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:50:38,645 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:50:38,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:50:38,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:50:38,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:50:38,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:50:38,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:50:38,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:50:38,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:50:38,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:50:38,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:50:38,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:50:38,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:50:38,683 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:50:38,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:50:38,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:50:38,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:50:38,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:50:38,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:50:38,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:50:38,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:50:38,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:50:38,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:50:38,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:50:38,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:50:38,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:50:38,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:50:38,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:50:38,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:50:38,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:50:38,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:50:38,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:50:38,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:50:38,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:50:38,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:50:38,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:50:38,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:50:38,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:50:38,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:50:38,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:50:38,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:50:38,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 [2024-11-16 02:50:38,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:50:38,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:50:38,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:50:38,997 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:50:38,997 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:50:38,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2.c [2024-11-16 02:50:40,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:50:40,691 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:50:40,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2.c [2024-11-16 02:50:40,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1bc568b/babd2dba38414dee8735257d6f982340/FLAG1c6c8cb76 [2024-11-16 02:50:40,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1bc568b/babd2dba38414dee8735257d6f982340 [2024-11-16 02:50:40,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:50:40,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:50:40,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:50:40,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:50:40,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:50:40,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:50:40" (1/1) ... [2024-11-16 02:50:40,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c7f502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:40, skipping insertion in model container [2024-11-16 02:50:40,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:50:40" (1/1) ... [2024-11-16 02:50:40,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:50:40,924 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/brs2.c[587,600] [2024-11-16 02:50:40,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:50:40,965 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:50:40,977 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/brs2.c[587,600] [2024-11-16 02:50:40,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:50:41,013 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:50:41,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41 WrapperNode [2024-11-16 02:50:41,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:50:41,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:50:41,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:50:41,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:50:41,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,047 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-16 02:50:41,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:50:41,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:50:41,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:50:41,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:50:41,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,086 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-16 02:50:41,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,094 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:50:41,105 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:50:41,105 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:50:41,105 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:50:41,106 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (1/1) ... [2024-11-16 02:50:41,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:50:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:41,143 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 02:50:41,150 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 02:50:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:50:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:50:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:50:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:50:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:50:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:50:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:50:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:50:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:50:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:50:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:50:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:50:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:50:41,281 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:50:41,282 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:50:41,424 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 02:50:41,430 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 02:50:41,431 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:50:41,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:50:41,442 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:50:41,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:50:41 BoogieIcfgContainer [2024-11-16 02:50:41,443 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:50:41,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:50:41,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:50:41,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:50:41,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:50:40" (1/3) ... [2024-11-16 02:50:41,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a37603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:50:41, skipping insertion in model container [2024-11-16 02:50:41,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:50:41" (2/3) ... [2024-11-16 02:50:41,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a37603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:50:41, skipping insertion in model container [2024-11-16 02:50:41,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:50:41" (3/3) ... [2024-11-16 02:50:41,452 INFO L112 eAbstractionObserver]: Analyzing ICFG brs2.c [2024-11-16 02:50:41,471 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:50:41,471 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:50:41,543 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:50:41,554 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;@7797292b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:50:41,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:50:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 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 02:50:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 02:50:41,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:41,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:41,572 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:41,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1176406123, now seen corresponding path program 1 times [2024-11-16 02:50:41,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:41,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438231462] [2024-11-16 02:50:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:41,848 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 02:50:41,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:41,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438231462] [2024-11-16 02:50:41,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438231462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:50:41,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:50:41,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:50:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522265701] [2024-11-16 02:50:41,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:50:41,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:50:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:50:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:50:41,882 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:41,895 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-16 02:50:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:50:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-16 02:50:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:41,904 INFO L225 Difference]: With dead ends: 43 [2024-11-16 02:50:41,904 INFO L226 Difference]: Without dead ends: 19 [2024-11-16 02:50:41,907 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 02:50:41,910 INFO L432 NwaCegarLoop]: 27 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, 27 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 02:50:41,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:50:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-16 02:50:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-16 02:50:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 02:50:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-16 02:50:41,940 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2024-11-16 02:50:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:41,940 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-16 02:50:41,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-16 02:50:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:50:41,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:41,942 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:41,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:50:41,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:41,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1493164272, now seen corresponding path program 1 times [2024-11-16 02:50:41,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:41,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105746388] [2024-11-16 02:50:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:42,138 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 02:50:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105746388] [2024-11-16 02:50:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105746388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:50:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:50:42,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:50:42,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77305799] [2024-11-16 02:50:42,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:50:42,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:50:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:50:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:50:42,143 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:42,215 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-11-16 02:50:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:50:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-16 02:50:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:42,217 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:50:42,217 INFO L226 Difference]: Without dead ends: 27 [2024-11-16 02:50:42,217 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 02:50:42,219 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:42,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-16 02:50:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-16 02:50:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 02:50:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-16 02:50:42,225 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2024-11-16 02:50:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:42,226 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-16 02:50:42,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-16 02:50:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:50:42,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:42,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:42,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:50:42,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:42,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -75358128, now seen corresponding path program 1 times [2024-11-16 02:50:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:42,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978518857] [2024-11-16 02:50:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:50:42,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:42,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978518857] [2024-11-16 02:50:42,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978518857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:50:42,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:50:42,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:50:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347346726] [2024-11-16 02:50:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:50:42,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:50:42,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:50:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:50:42,558 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 02:50:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:42,632 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-16 02:50:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:50:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:50:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:42,634 INFO L225 Difference]: With dead ends: 34 [2024-11-16 02:50:42,635 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 02:50:42,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 02:50:42,637 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:42,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:50:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 02:50:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-16 02:50:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 02:50:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-16 02:50:42,650 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2024-11-16 02:50:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:42,650 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-16 02:50:42,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 02:50:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-16 02:50:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:50:42,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:42,652 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] [2024-11-16 02:50:42,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:50:42,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:42,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1404754963, now seen corresponding path program 1 times [2024-11-16 02:50:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:42,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338337828] [2024-11-16 02:50:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338337828] [2024-11-16 02:50:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338337828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122124061] [2024-11-16 02:50:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:42,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:42,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:42,812 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 02:50:42,815 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 02:50:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:42,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:50:42,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:43,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122124061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:43,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:50:43,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805742707] [2024-11-16 02:50:43,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:43,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:50:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:50:43,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:50:43,085 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:43,180 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2024-11-16 02:50:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:50:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 02:50:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:43,182 INFO L225 Difference]: With dead ends: 55 [2024-11-16 02:50:43,182 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:50:43,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:50:43,183 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:43,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:50:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-11-16 02:50:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 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 02:50:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-16 02:50:43,188 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2024-11-16 02:50:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:43,189 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-16 02:50:43,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-16 02:50:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:50:43,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:43,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:43,208 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 02:50:43,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:43,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:43,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 667119152, now seen corresponding path program 1 times [2024-11-16 02:50:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:43,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068498359] [2024-11-16 02:50:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068498359] [2024-11-16 02:50:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068498359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494615425] [2024-11-16 02:50:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:44,106 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 02:50:44,108 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 02:50:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:44,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 02:50:44,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:44,242 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 02:50:44,315 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 02:50:44,392 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 02:50:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:44,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:44,639 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 02:50:44,643 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 26 treesize of output 22 [2024-11-16 02:50:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494615425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:44,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:44,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2024-11-16 02:50:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134804868] [2024-11-16 02:50:44,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:44,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:50:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:44,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:50:44,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:50:44,716 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 02:50:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:45,015 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-16 02:50:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:50:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 30 [2024-11-16 02:50:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:45,016 INFO L225 Difference]: With dead ends: 64 [2024-11-16 02:50:45,016 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 02:50:45,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:50:45,018 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:45,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 132 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:50:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 02:50:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-16 02:50:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-16 02:50:45,031 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 30 [2024-11-16 02:50:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:45,031 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-16 02:50:45,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 02:50:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-16 02:50:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:50:45,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:45,033 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:45,051 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 02:50:45,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:45,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:45,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 426541517, now seen corresponding path program 2 times [2024-11-16 02:50:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006778973] [2024-11-16 02:50:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006778973] [2024-11-16 02:50:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006778973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482655912] [2024-11-16 02:50:45,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:50:45,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:45,387 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 02:50:45,388 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 02:50:45,454 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:50:45,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:45,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:50:45,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:45,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482655912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:45,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:50:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351985292] [2024-11-16 02:50:45,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:45,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:50:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:50:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:50:45,614 INFO L87 Difference]: Start difference. First operand 36 states and 39 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 02:50:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:45,730 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-11-16 02:50:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:50:45,731 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 34 [2024-11-16 02:50:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:45,732 INFO L225 Difference]: With dead ends: 70 [2024-11-16 02:50:45,732 INFO L226 Difference]: Without dead ends: 43 [2024-11-16 02:50:45,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 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 02:50:45,735 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:45,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-16 02:50:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-16 02:50:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:50:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-16 02:50:45,746 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2024-11-16 02:50:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:45,747 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-16 02:50:45,747 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 02:50:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-16 02:50:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:50:45,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:45,748 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:45,765 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 02:50:45,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:45,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:45,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2101854257, now seen corresponding path program 3 times [2024-11-16 02:50:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:45,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254691349] [2024-11-16 02:50:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:45,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:47,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254691349] [2024-11-16 02:50:47,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254691349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305332456] [2024-11-16 02:50:47,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:50:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:47,105 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 02:50:47,107 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 02:50:47,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:50:47,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:47,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 02:50:47,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:47,184 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 02:50:47,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-16 02:50:47,479 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 02:50:47,619 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 19 [2024-11-16 02:50:47,837 INFO L349 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2024-11-16 02:50:47,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 61 [2024-11-16 02:50:47,850 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 68 treesize of output 41 [2024-11-16 02:50:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:50:48,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:50:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305332456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:48,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-11-16 02:50:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377533149] [2024-11-16 02:50:48,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:50:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:50:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2048, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:50:48,880 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 02:50:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:52,415 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2024-11-16 02:50:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 02:50:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 02:50:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:52,417 INFO L225 Difference]: With dead ends: 114 [2024-11-16 02:50:52,417 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 02:50:52,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2616 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1366, Invalid=8336, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 02:50:52,423 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 253 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:52,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 350 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:50:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 02:50:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 48. [2024-11-16 02:50:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 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 02:50:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-11-16 02:50:52,440 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 38 [2024-11-16 02:50:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:52,440 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-16 02:50:52,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 02:50:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-11-16 02:50:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 02:50:52,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:52,441 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:52,456 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 02:50:52,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:52,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:52,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1057833353, now seen corresponding path program 4 times [2024-11-16 02:50:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198561053] [2024-11-16 02:50:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198561053] [2024-11-16 02:50:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198561053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129024312] [2024-11-16 02:50:52,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:50:52,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:52,793 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 02:50:52,795 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 02:50:52,873 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:50:52,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:52,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:50:52,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 50 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:53,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 50 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129024312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:53,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-16 02:50:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016801784] [2024-11-16 02:50:53,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:53,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 02:50:53,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 02:50:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-16 02:50:53,137 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 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 02:50:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:53,321 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2024-11-16 02:50:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 02:50:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 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 46 [2024-11-16 02:50:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:53,322 INFO L225 Difference]: With dead ends: 106 [2024-11-16 02:50:53,322 INFO L226 Difference]: Without dead ends: 59 [2024-11-16 02:50:53,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:50:53,323 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:53,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 95 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-16 02:50:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2024-11-16 02:50:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 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 02:50:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2024-11-16 02:50:53,336 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 46 [2024-11-16 02:50:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:53,338 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2024-11-16 02:50:53,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 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 02:50:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2024-11-16 02:50:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:50:53,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:53,344 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:53,359 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 02:50:53,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:53,545 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:53,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1175566770, now seen corresponding path program 5 times [2024-11-16 02:50:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073246821] [2024-11-16 02:50:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073246821] [2024-11-16 02:50:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073246821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858164328] [2024-11-16 02:50:55,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:50:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:55,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:55,685 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 02:50:55,686 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 02:50:55,783 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:50:55,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:55,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 02:50:55,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:55,838 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 02:50:55,905 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 22 [2024-11-16 02:50:55,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:55,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-16 02:50:56,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:56,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2024-11-16 02:50:56,183 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 02:50:56,324 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 02:50:56,425 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 02:50:56,578 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 02:50:56,733 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 02:50:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:56,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:57,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 147 [2024-11-16 02:50:57,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:57,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47702430 treesize of output 39313822 [2024-11-16 02:50:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:50:58,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858164328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:58,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:58,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 22] total 60 [2024-11-16 02:50:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448487594] [2024-11-16 02:50:58,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:58,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:50:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:50:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3211, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:50:58,164 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:50:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:59,707 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-11-16 02:50:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 02:50:59,707 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 02:50:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:59,708 INFO L225 Difference]: With dead ends: 109 [2024-11-16 02:50:59,708 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 02:50:59,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=809, Invalid=6501, Unknown=0, NotChecked=0, Total=7310 [2024-11-16 02:50:59,711 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 134 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:59,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 492 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:50:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 02:50:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-16 02:50:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 02:50:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-16 02:50:59,725 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 54 [2024-11-16 02:50:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:59,725 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-16 02:50:59,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:50:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-16 02:50:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 02:50:59,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:59,726 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:59,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:50:59,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:59,927 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:59,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1813125867, now seen corresponding path program 6 times [2024-11-16 02:50:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884646267] [2024-11-16 02:50:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884646267] [2024-11-16 02:51:00,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884646267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769669963] [2024-11-16 02:51:00,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:51:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:00,148 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 02:51:00,150 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 02:51:00,274 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:51:00,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:51:00,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:51:00,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:00,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:00,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769669963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:51:00,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:51:00,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:51:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203664764] [2024-11-16 02:51:00,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:51:00,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:51:00,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:51:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:51:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:51:00,590 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 02:51:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:51:00,716 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2024-11-16 02:51:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:51:00,716 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 0 states have call successors, (0), 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 58 [2024-11-16 02:51:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:51:00,717 INFO L225 Difference]: With dead ends: 99 [2024-11-16 02:51:00,717 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 02:51:00,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:51:00,718 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:51:00,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 87 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:51:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 02:51:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2024-11-16 02:51:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 02:51:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-16 02:51:00,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 58 [2024-11-16 02:51:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:51:00,729 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-16 02:51:00,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 02:51:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-16 02:51:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 02:51:00,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:51:00,729 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:51:00,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:51:00,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:00,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:51:00,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:51:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash -922899922, now seen corresponding path program 7 times [2024-11-16 02:51:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:51:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368025141] [2024-11-16 02:51:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:51:00,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:51:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 32 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:03,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368025141] [2024-11-16 02:51:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368025141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722812721] [2024-11-16 02:51:03,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:51:03,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:03,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:03,245 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 02:51:03,246 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 02:51:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:03,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-16 02:51:03,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:03,381 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 02:51:03,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:51:03,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:03,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-16 02:51:03,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:03,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:51:03,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:03,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-16 02:51:03,949 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 02:51:04,097 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 02:51:04,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:51:04,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:51:04,510 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 02:51:04,709 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 02:51:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:04,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:06,299 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 237 treesize of output 227 [2024-11-16 02:51:07,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:07,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 271659770839594 treesize of output 263074533868074 [2024-11-16 02:51:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:10,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722812721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:51:10,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:51:10,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 27] total 75 [2024-11-16 02:51:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957489215] [2024-11-16 02:51:10,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:51:10,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 02:51:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:51:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 02:51:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=4892, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:51:10,435 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 75 states, 75 states have (on average 2.2533333333333334) internal successors, (169), 75 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 02:51:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:51:12,730 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2024-11-16 02:51:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-16 02:51:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.2533333333333334) internal successors, (169), 75 states have internal predecessors, (169), 0 states have call successors, (0), 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 62 [2024-11-16 02:51:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:51:12,731 INFO L225 Difference]: With dead ends: 112 [2024-11-16 02:51:12,731 INFO L226 Difference]: Without dead ends: 70 [2024-11-16 02:51:12,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=979, Invalid=7393, Unknown=0, NotChecked=0, Total=8372 [2024-11-16 02:51:12,734 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 143 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:51:12,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 551 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:51:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-16 02:51:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-16 02:51:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:51:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-11-16 02:51:12,744 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 62 [2024-11-16 02:51:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:51:12,744 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-11-16 02:51:12,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.2533333333333334) internal successors, (169), 75 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 02:51:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-11-16 02:51:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 02:51:12,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:51:12,745 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:51:12,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:51:12,946 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,SelfDestructingSolverStorable10 [2024-11-16 02:51:12,946 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:51:12,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:51:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -619934005, now seen corresponding path program 8 times [2024-11-16 02:51:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:51:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734183484] [2024-11-16 02:51:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:51:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:51:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 76 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:13,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:13,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734183484] [2024-11-16 02:51:13,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734183484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:13,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686446670] [2024-11-16 02:51:13,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:51:13,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:13,222 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 02:51:13,224 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 02:51:13,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:51:13,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:51:13,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:51:13,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:13,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686446670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:51:13,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:51:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-16 02:51:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063604965] [2024-11-16 02:51:13,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:51:13,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:51:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:51:13,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:51:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:51:13,798 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 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 02:51:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:51:14,051 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2024-11-16 02:51:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 02:51:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 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 66 [2024-11-16 02:51:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:51:14,052 INFO L225 Difference]: With dead ends: 111 [2024-11-16 02:51:14,052 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 02:51:14,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:51:14,053 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:51:14,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 121 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:51:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 02:51:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-16 02:51:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:51:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-16 02:51:14,063 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 66 [2024-11-16 02:51:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:51:14,063 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-16 02:51:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 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 02:51:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-16 02:51:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 02:51:14,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:51:14,064 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:51:14,081 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 02:51:14,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:14,265 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:51:14,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:51:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1541485517, now seen corresponding path program 9 times [2024-11-16 02:51:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:51:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287457589] [2024-11-16 02:51:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:51:14,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:51:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:17,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287457589] [2024-11-16 02:51:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287457589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:17,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702451591] [2024-11-16 02:51:17,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:51:17,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:17,668 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 02:51:17,669 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 02:51:17,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:51:17,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:51:17,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-16 02:51:17,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:17,811 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 02:51:17,853 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-16 02:51:17,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-16 02:51:17,952 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-16 02:51:17,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-16 02:51:18,121 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-11-16 02:51:18,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 56 [2024-11-16 02:51:18,289 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-16 02:51:18,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 69 [2024-11-16 02:51:18,530 INFO L349 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2024-11-16 02:51:18,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 72 treesize of output 87 [2024-11-16 02:51:19,354 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 02:51:19,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-16 02:51:20,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-16 02:51:21,081 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 45 treesize of output 33 [2024-11-16 02:51:21,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2024-11-16 02:51:22,195 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 63 treesize of output 51 [2024-11-16 02:51:22,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:51:22,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:22,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 40 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 129 treesize of output 197 [2024-11-16 02:51:22,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 104 [2024-11-16 02:51:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:23,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:25,988 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 02:51:25,990 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 02:51:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702451591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:51:26,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:51:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35, 36] total 96 [2024-11-16 02:51:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909794929] [2024-11-16 02:51:26,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:51:26,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-16 02:51:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:51:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-16 02:51:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=987, Invalid=8133, Unknown=0, NotChecked=0, Total=9120 [2024-11-16 02:51:26,132 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 96 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:51:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:51:43,388 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2024-11-16 02:51:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-11-16 02:51:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 96 states have internal predecessors, (190), 0 states have call successors, (0), 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 70 [2024-11-16 02:51:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:51:43,391 INFO L225 Difference]: With dead ends: 245 [2024-11-16 02:51:43,391 INFO L226 Difference]: Without dead ends: 235 [2024-11-16 02:51:43,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14604 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=4851, Invalid=42455, Unknown=0, NotChecked=0, Total=47306 [2024-11-16 02:51:43,395 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 611 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:51:43,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 801 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 02:51:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-16 02:51:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 107. [2024-11-16 02:51:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 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 02:51:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2024-11-16 02:51:43,418 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 70 [2024-11-16 02:51:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:51:43,418 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2024-11-16 02:51:43,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 96 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:51:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2024-11-16 02:51:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 02:51:43,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:51:43,419 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:51:43,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 02:51:43,619 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,SelfDestructingSolverStorable12 [2024-11-16 02:51:43,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:51:43,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:51:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2122754169, now seen corresponding path program 10 times [2024-11-16 02:51:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:51:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628058525] [2024-11-16 02:51:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:51:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:51:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 132 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628058525] [2024-11-16 02:51:43,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628058525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348757026] [2024-11-16 02:51:43,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:51:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:43,964 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 02:51:43,965 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 02:51:44,111 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:51:44,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:51:44,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:51:44,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 158 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:51:44,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 158 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:51:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348757026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:51:44,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:51:44,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 30 [2024-11-16 02:51:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182018126] [2024-11-16 02:51:44,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:51:44,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 02:51:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:51:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 02:51:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:51:44,534 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 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 02:51:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:51:44,758 INFO L93 Difference]: Finished difference Result 221 states and 238 transitions. [2024-11-16 02:51:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:51:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 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 78 [2024-11-16 02:51:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:51:44,759 INFO L225 Difference]: With dead ends: 221 [2024-11-16 02:51:44,759 INFO L226 Difference]: Without dead ends: 146 [2024-11-16 02:51:44,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:51:44,760 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:51:44,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 118 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:51:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-16 02:51:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 115. [2024-11-16 02:51:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1403508771929824) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:51:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2024-11-16 02:51:44,787 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 78 [2024-11-16 02:51:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:51:44,788 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2024-11-16 02:51:44,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 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 02:51:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2024-11-16 02:51:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 02:51:44,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:51:44,789 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:51:44,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:51:44,990 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,SelfDestructingSolverStorable13 [2024-11-16 02:51:44,990 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:51:44,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:51:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1844322989, now seen corresponding path program 11 times [2024-11-16 02:51:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:51:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031899] [2024-11-16 02:51:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:51:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:51:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:51:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 36 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:48,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:51:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031899] [2024-11-16 02:51:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:51:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768762335] [2024-11-16 02:51:48,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:51:48,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:51:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:51:48,510 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 02:51:48,511 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 02:51:48,696 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-16 02:51:48,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:51:48,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-16 02:51:48,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:51:48,730 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 02:51:48,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:51:48,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:48,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-16 02:51:48,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:48,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:51:49,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:49,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-16 02:51:49,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:49,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-16 02:51:49,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:51:49,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-16 02:51:49,534 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 02:51:49,716 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 02:51:49,847 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 02:51:50,029 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 02:51:50,180 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 02:51:50,397 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 02:51:50,533 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 02:51:50,818 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 02:51:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 21 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:51:50,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:51:53,780 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 437 treesize of output 423