./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s52if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s52if.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 adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:28:39,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:28:39,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:28:39,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:28:39,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:28:39,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:28:39,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:28:39,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:28:39,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:28:39,493 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:28:39,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:28:39,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:28:39,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:28:39,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:28:39,498 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:28:39,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:28:39,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:28:39,499 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:28:39,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:28:39,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:28:39,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:28:39,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:28:39,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:28:39,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:28:39,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:28:39,505 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:28:39,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:28:39,505 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:28:39,506 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:28:39,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:28:39,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:28:39,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:28:39,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:39,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:28:39,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:28:39,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:28:39,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:28:39,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:28:39,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:28:39,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:28:39,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:28:39,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:28:39,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 [2024-11-09 18:28:39,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:28:39,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:28:39,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:28:39,830 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:28:39,832 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:28:39,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s52if.c [2024-11-09 18:28:41,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:28:41,550 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:28:41,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s52if.c [2024-11-09 18:28:41,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bd31a9c/bd016e7842b646fa99ba2f71da8647c3/FLAGf5a631fca [2024-11-09 18:28:41,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bd31a9c/bd016e7842b646fa99ba2f71da8647c3 [2024-11-09 18:28:41,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:28:41,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:28:41,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:41,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:28:41,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:28:41,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70df4d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41, skipping insertion in model container [2024-11-09 18:28:41,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:28:41,772 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/s52if.c[588,601] [2024-11-09 18:28:41,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:41,822 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:28:41,837 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/s52if.c[588,601] [2024-11-09 18:28:41,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:41,873 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:28:41,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41 WrapperNode [2024-11-09 18:28:41,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:41,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:41,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:28:41,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:28:41,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,918 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-09 18:28:41,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:41,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:28:41,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:28:41,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:28:41,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,960 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 6, 9]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2024-11-09 18:28:41,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,969 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:28:41,985 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:28:41,985 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:28:41,985 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:28:41,986 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (1/1) ... [2024-11-09 18:28:41,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:42,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:42,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:28:42,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:28:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:28:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:28:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:28:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:28:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:28:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:28:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:28:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:28:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:28:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:28:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:28:42,172 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:28:42,175 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:28:42,346 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-09 18:28:42,354 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 18:28:42,354 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:28:42,365 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:28:42,366 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:28:42,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:42 BoogieIcfgContainer [2024-11-09 18:28:42,367 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:28:42,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:28:42,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:28:42,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:28:42,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:41" (1/3) ... [2024-11-09 18:28:42,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5601436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:42, skipping insertion in model container [2024-11-09 18:28:42,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:41" (2/3) ... [2024-11-09 18:28:42,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5601436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:42, skipping insertion in model container [2024-11-09 18:28:42,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:42" (3/3) ... [2024-11-09 18:28:42,374 INFO L112 eAbstractionObserver]: Analyzing ICFG s52if.c [2024-11-09 18:28:42,391 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:28:42,392 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:28:42,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:28:42,480 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;@7a557241, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:28:42,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:28:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:28:42,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:42,490 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:42,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:42,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1088486860, now seen corresponding path program 1 times [2024-11-09 18:28:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899916741] [2024-11-09 18:28:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:42,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899916741] [2024-11-09 18:28:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899916741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:42,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:42,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:28:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463870553] [2024-11-09 18:28:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:42,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:28:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:28:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:28:42,727 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:42,740 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-09 18:28:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:28:42,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 18:28:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:42,749 INFO L225 Difference]: With dead ends: 49 [2024-11-09 18:28:42,749 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:28:42,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:28:42,754 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:42,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:28:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:28:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:28:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 18:28:42,783 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2024-11-09 18:28:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:42,783 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 18:28:42,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 18:28:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 18:28:42,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:42,785 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:28:42,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 632050842, now seen corresponding path program 1 times [2024-11-09 18:28:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51205175] [2024-11-09 18:28:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:43,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51205175] [2024-11-09 18:28:43,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51205175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:43,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:43,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:28:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531064101] [2024-11-09 18:28:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:43,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:28:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:28:43,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:28:43,040 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:43,133 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-09 18:28:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:28:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 18:28:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:43,135 INFO L225 Difference]: With dead ends: 47 [2024-11-09 18:28:43,136 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:28:43,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:28:43,137 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:43,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:28:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-09 18:28:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 18:28:43,146 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2024-11-09 18:28:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:43,146 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 18:28:43,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 18:28:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:43,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:43,148 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:43,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:28:43,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:43,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:43,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2142199865, now seen corresponding path program 1 times [2024-11-09 18:28:43,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:43,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410496543] [2024-11-09 18:28:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:43,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410496543] [2024-11-09 18:28:43,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410496543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:43,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581920479] [2024-11-09 18:28:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:43,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:43,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:43,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:28:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:44,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:28:44,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:44,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:44,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:44,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:44,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581920479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:44,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:44,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-09 18:28:44,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446141884] [2024-11-09 18:28:44,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:44,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:44,588 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:44,909 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2024-11-09 18:28:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:28:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:28:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:44,911 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:28:44,911 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 18:28:44,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:28:44,913 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:44,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 98 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 18:28:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2024-11-09 18:28:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-09 18:28:44,921 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2024-11-09 18:28:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:44,921 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-09 18:28:44,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-09 18:28:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:44,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:44,922 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:44,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:45,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:45,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:45,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -409957096, now seen corresponding path program 1 times [2024-11-09 18:28:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:45,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322089944] [2024-11-09 18:28:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322089944] [2024-11-09 18:28:45,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322089944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:45,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337804668] [2024-11-09 18:28:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:45,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:45,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:45,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:28:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:45,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:28:45,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:45,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:45,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:45,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-09 18:28:45,770 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:45,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-09 18:28:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337804668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:45,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:45,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-09 18:28:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147244446] [2024-11-09 18:28:45,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:45,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:45,790 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:45,965 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2024-11-09 18:28:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:28:45,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:28:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:45,968 INFO L225 Difference]: With dead ends: 111 [2024-11-09 18:28:45,968 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 18:28:45,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:28:45,970 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 59 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:45,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 18:28:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2024-11-09 18:28:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-09 18:28:45,994 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2024-11-09 18:28:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:45,995 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-09 18:28:45,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-09 18:28:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:28:45,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:45,996 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:46,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:28:46,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 18:28:46,198 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:46,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1097594713, now seen corresponding path program 1 times [2024-11-09 18:28:46,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174226721] [2024-11-09 18:28:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:46,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174226721] [2024-11-09 18:28:46,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174226721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764304172] [2024-11-09 18:28:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:46,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:46,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:46,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:46,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:28:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:46,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:28:46,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:46,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:46,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:46,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:28:46,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:28:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764304172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:46,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 18:28:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448111542] [2024-11-09 18:28:46,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:46,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:28:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:28:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:28:46,645 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:46,727 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2024-11-09 18:28:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:28:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:28:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:46,728 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:28:46,728 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 18:28:46,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:46,729 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:46,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 18:28:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-09 18:28:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-09 18:28:46,749 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2024-11-09 18:28:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:46,750 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-09 18:28:46,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-09 18:28:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:28:46,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:46,751 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:46,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:46,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:46,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:46,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1727867096, now seen corresponding path program 2 times [2024-11-09 18:28:46,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:46,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452211126] [2024-11-09 18:28:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452211126] [2024-11-09 18:28:47,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452211126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750388235] [2024-11-09 18:28:47,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:47,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:47,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:28:47,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:47,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:47,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:47,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:47,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750388235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:47,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:47,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351925365] [2024-11-09 18:28:47,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:47,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:47,266 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:47,462 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2024-11-09 18:28:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:28:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-09 18:28:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:47,465 INFO L225 Difference]: With dead ends: 110 [2024-11-09 18:28:47,465 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 18:28:47,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:28:47,469 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:47,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 93 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 18:28:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2024-11-09 18:28:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-09 18:28:47,485 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 29 [2024-11-09 18:28:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:47,485 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-09 18:28:47,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-09 18:28:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:28:47,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:47,487 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:47,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:28:47,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:47,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:47,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash 107565623, now seen corresponding path program 3 times [2024-11-09 18:28:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946713675] [2024-11-09 18:28:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:47,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:47,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946713675] [2024-11-09 18:28:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946713675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843254089] [2024-11-09 18:28:47,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:47,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:47,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:28:47,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:28:47,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:47,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:47,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:47,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843254089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:48,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520336497] [2024-11-09 18:28:48,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:48,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:48,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:48,021 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:48,131 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-09 18:28:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:28:48,132 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 18:28:48,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:48,132 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:28:48,132 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 18:28:48,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:28:48,134 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:48,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 18:28:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-09 18:28:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-09 18:28:48,146 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 31 [2024-11-09 18:28:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:48,147 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-09 18:28:48,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-09 18:28:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:48,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:48,149 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:48,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:28:48,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:48,353 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:48,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2130604056, now seen corresponding path program 4 times [2024-11-09 18:28:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047184692] [2024-11-09 18:28:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:48,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:48,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047184692] [2024-11-09 18:28:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047184692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933335673] [2024-11-09 18:28:48,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:48,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:48,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:48,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:28:48,931 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:48,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:48,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 18:28:48,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:48,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:49,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:49,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:49,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933335673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:49,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:49,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 31 [2024-11-09 18:28:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433557160] [2024-11-09 18:28:49,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:49,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:28:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:28:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:28:49,756 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:50,811 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2024-11-09 18:28:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 18:28:50,812 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 18:28:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:50,814 INFO L225 Difference]: With dead ends: 148 [2024-11-09 18:28:50,814 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 18:28:50,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=506, Invalid=2464, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 18:28:50,816 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 114 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:50,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 256 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:28:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 18:28:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 92. [2024-11-09 18:28:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 91 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2024-11-09 18:28:50,851 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 37 [2024-11-09 18:28:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:50,852 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2024-11-09 18:28:50,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2024-11-09 18:28:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:50,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:50,857 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:50,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:51,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:51,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:51,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash -421552905, now seen corresponding path program 1 times [2024-11-09 18:28:51,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:51,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892076958] [2024-11-09 18:28:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:51,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892076958] [2024-11-09 18:28:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892076958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66125552] [2024-11-09 18:28:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:51,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:51,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:28:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:51,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 18:28:51,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:51,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:51,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:51,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:28:51,633 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:51,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-09 18:28:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:28:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66125552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:51,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-09 18:28:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530678339] [2024-11-09 18:28:51,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:51,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:51,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:51,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:51,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:51,663 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:51,912 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2024-11-09 18:28:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:28:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 18:28:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:51,913 INFO L225 Difference]: With dead ends: 141 [2024-11-09 18:28:51,913 INFO L226 Difference]: Without dead ends: 132 [2024-11-09 18:28:51,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:28:51,915 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 86 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:51,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 205 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-09 18:28:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2024-11-09 18:28:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-11-09 18:28:51,937 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 37 [2024-11-09 18:28:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:51,937 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-11-09 18:28:51,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-11-09 18:28:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:28:51,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:51,940 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:51,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:28:52,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:52,141 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:52,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1266024776, now seen corresponding path program 1 times [2024-11-09 18:28:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808540636] [2024-11-09 18:28:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808540636] [2024-11-09 18:28:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808540636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798579756] [2024-11-09 18:28:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:52,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:52,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:28:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:52,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:28:52,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:52,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:52,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 18:28:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:52,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:52,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 18:28:52,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 18:28:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798579756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 18:28:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839688052] [2024-11-09 18:28:52,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:52,723 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:52,856 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2024-11-09 18:28:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:28:52,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 18:28:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:52,858 INFO L225 Difference]: With dead ends: 154 [2024-11-09 18:28:52,858 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 18:28:52,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:28:52,859 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:52,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 136 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 18:28:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2024-11-09 18:28:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-09 18:28:52,881 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 37 [2024-11-09 18:28:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:52,882 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-09 18:28:52,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-09 18:28:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:28:52,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:52,883 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:52,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:53,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 18:28:53,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:53,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1512088938, now seen corresponding path program 5 times [2024-11-09 18:28:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810977177] [2024-11-09 18:28:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:53,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:53,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810977177] [2024-11-09 18:28:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810977177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700594244] [2024-11-09 18:28:53,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:28:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:53,210 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:53,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:28:53,299 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:28:53,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:53,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:28:53,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:53,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:28:53,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700594244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:53,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:53,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:28:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510216865] [2024-11-09 18:28:53,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:53,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:53,478 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:53,622 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-11-09 18:28:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:28:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 18:28:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:53,624 INFO L225 Difference]: With dead ends: 138 [2024-11-09 18:28:53,624 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 18:28:53,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:28:53,626 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:53,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 76 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 18:28:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2024-11-09 18:28:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-11-09 18:28:53,636 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 41 [2024-11-09 18:28:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:53,637 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-11-09 18:28:53,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-11-09 18:28:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:28:53,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:53,639 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:53,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:53,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:53,843 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1232060985, now seen corresponding path program 6 times [2024-11-09 18:28:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729326918] [2024-11-09 18:28:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:53,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:53,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729326918] [2024-11-09 18:28:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729326918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:53,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763557687] [2024-11-09 18:28:53,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:28:53,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:53,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:53,975 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:53,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:28:54,096 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:28:54,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:54,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:28:54,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:54,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:54,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763557687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:54,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:28:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004940801] [2024-11-09 18:28:54,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:54,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:28:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:28:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:28:54,274 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:54,441 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-09 18:28:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:28:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:28:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:54,443 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:28:54,443 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:28:54,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:54,444 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:54,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 108 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:28:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-09 18:28:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-09 18:28:54,451 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 43 [2024-11-09 18:28:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:54,451 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-09 18:28:54,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-09 18:28:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:54,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:54,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:54,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:54,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:28:54,657 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:54,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1428730935, now seen corresponding path program 7 times [2024-11-09 18:28:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434536581] [2024-11-09 18:28:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434536581] [2024-11-09 18:28:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434536581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896249890] [2024-11-09 18:28:55,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:28:55,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:55,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:55,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:28:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:55,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 18:28:55,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:55,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:55,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:55,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:55,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:55,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896249890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:56,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 33 [2024-11-09 18:28:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468956723] [2024-11-09 18:28:56,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:56,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:28:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:28:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:28:56,271 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:57,648 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2024-11-09 18:28:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 18:28:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 18:28:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:57,650 INFO L225 Difference]: With dead ends: 161 [2024-11-09 18:28:57,650 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 18:28:57,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=377, Invalid=3045, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:28:57,652 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:57,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 446 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:28:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 18:28:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2024-11-09 18:28:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 126 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2024-11-09 18:28:57,667 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 47 [2024-11-09 18:28:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:57,668 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2024-11-09 18:28:57,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2024-11-09 18:28:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:57,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:57,669 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:57,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:28:57,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:28:57,874 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:57,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1123426026, now seen corresponding path program 2 times [2024-11-09 18:28:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:57,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788864194] [2024-11-09 18:28:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788864194] [2024-11-09 18:28:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788864194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341918684] [2024-11-09 18:28:58,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:58,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:58,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:28:58,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:58,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:58,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 18:28:58,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:58,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:28:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:28:58,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:58,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:28:58,574 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:28:58,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-09 18:28:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:28:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341918684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:58,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 22 [2024-11-09 18:28:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308755960] [2024-11-09 18:28:58,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:58,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 18:28:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 18:28:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-09 18:28:58,622 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:58,958 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2024-11-09 18:28:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:28:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 18:28:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:58,959 INFO L225 Difference]: With dead ends: 179 [2024-11-09 18:28:58,959 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 18:28:58,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:28:58,960 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:58,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 314 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:28:58,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 18:28:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2024-11-09 18:28:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 134 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2024-11-09 18:28:58,976 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 47 [2024-11-09 18:28:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:58,976 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2024-11-09 18:28:58,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2024-11-09 18:28:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:28:58,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:58,978 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:58,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:28:59,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:28:59,179 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:59,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash 121338455, now seen corresponding path program 2 times [2024-11-09 18:28:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:59,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579417556] [2024-11-09 18:28:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:59,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:59,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579417556] [2024-11-09 18:28:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579417556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:59,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240083023] [2024-11-09 18:28:59,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:59,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:59,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:59,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:59,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:28:59,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:59,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:59,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 18:28:59,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:59,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:28:59,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 18:28:59,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 18:28:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:59,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:59,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 18:28:59,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 18:28:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:28:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240083023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:59,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-09 18:28:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194606834] [2024-11-09 18:28:59,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:28:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:28:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:28:59,896 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:00,123 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-09 18:29:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:29:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 18:29:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:00,128 INFO L225 Difference]: With dead ends: 213 [2024-11-09 18:29:00,128 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 18:29:00,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:29:00,129 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:00,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:29:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 18:29:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-09 18:29:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 136 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2024-11-09 18:29:00,158 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 47 [2024-11-09 18:29:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:00,159 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2024-11-09 18:29:00,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2024-11-09 18:29:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 18:29:00,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:00,160 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:00,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:00,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:29:00,361 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:00,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash -423430314, now seen corresponding path program 8 times [2024-11-09 18:29:00,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:00,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493002229] [2024-11-09 18:29:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:29:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493002229] [2024-11-09 18:29:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493002229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12380106] [2024-11-09 18:29:00,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:29:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:00,492 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:00,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:29:00,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:29:00,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:00,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:29:00,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:29:00,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:29:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12380106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:00,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:00,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:29:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926643511] [2024-11-09 18:29:00,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:00,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:29:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:29:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:29:00,808 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:01,122 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2024-11-09 18:29:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:29:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 18:29:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:01,127 INFO L225 Difference]: With dead ends: 201 [2024-11-09 18:29:01,127 INFO L226 Difference]: Without dead ends: 177 [2024-11-09 18:29:01,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:29:01,128 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:01,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 187 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:29:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-09 18:29:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2024-11-09 18:29:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.185483870967742) internal successors, (147), 124 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-09 18:29:01,146 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 49 [2024-11-09 18:29:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:01,147 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-09 18:29:01,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-09 18:29:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:29:01,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:01,148 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:01,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:01,349 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:01,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 385644341, now seen corresponding path program 9 times [2024-11-09 18:29:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676459426] [2024-11-09 18:29:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:29:01,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:01,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676459426] [2024-11-09 18:29:01,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676459426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:01,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631067048] [2024-11-09 18:29:01,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:29:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:01,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:01,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:29:01,634 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:29:01,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:01,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:29:01,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:29:01,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:29:01,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631067048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:01,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:01,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:29:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052550132] [2024-11-09 18:29:01,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:01,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:29:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:29:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:29:01,828 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:02,013 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2024-11-09 18:29:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:29:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:29:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:02,016 INFO L225 Difference]: With dead ends: 180 [2024-11-09 18:29:02,016 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 18:29:02,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:29:02,018 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:02,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 111 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:29:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 18:29:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-09 18:29:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-09 18:29:02,027 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 51 [2024-11-09 18:29:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:02,028 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-09 18:29:02,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-09 18:29:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:29:02,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:02,029 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:02,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:29:02,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 18:29:02,233 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:02,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:02,233 INFO L85 PathProgramCache]: Analyzing trace with hash 398548118, now seen corresponding path program 10 times [2024-11-09 18:29:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:02,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16472030] [2024-11-09 18:29:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16472030] [2024-11-09 18:29:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16472030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067343553] [2024-11-09 18:29:03,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:29:03,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:03,006 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:03,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:29:03,139 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:29:03,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:03,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 18:29:03,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:03,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:29:03,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:03,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:03,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:04,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:04,149 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 18:29:04,149 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 45 treesize of output 13 [2024-11-09 18:29:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:04,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:05,357 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 18:29:05,358 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 49 treesize of output 17 [2024-11-09 18:29:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067343553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:05,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:05,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 59 [2024-11-09 18:29:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626011975] [2024-11-09 18:29:05,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:05,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 18:29:05,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 18:29:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=3132, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:29:05,863 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 59 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:12,192 INFO L93 Difference]: Finished difference Result 289 states and 353 transitions. [2024-11-09 18:29:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-09 18:29:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 59 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 18:29:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:12,194 INFO L225 Difference]: With dead ends: 289 [2024-11-09 18:29:12,194 INFO L226 Difference]: Without dead ends: 281 [2024-11-09 18:29:12,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5066 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1687, Invalid=17495, Unknown=0, NotChecked=0, Total=19182 [2024-11-09 18:29:12,199 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 566 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:12,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 915 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 18:29:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-09 18:29:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 155. [2024-11-09 18:29:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2024-11-09 18:29:12,223 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 57 [2024-11-09 18:29:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:12,223 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2024-11-09 18:29:12,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 59 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2024-11-09 18:29:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:29:12,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:12,224 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:12,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 18:29:12,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:29:12,425 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:12,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2141358453, now seen corresponding path program 3 times [2024-11-09 18:29:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060697974] [2024-11-09 18:29:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 53 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:29:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060697974] [2024-11-09 18:29:13,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060697974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694952341] [2024-11-09 18:29:13,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:29:13,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:13,121 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:13,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:29:13,217 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:29:13,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:13,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:29:13,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:13,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 18:29:13,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:29:13,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-09 18:29:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:29:13,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:29:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694952341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:13,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:13,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 9] total 30 [2024-11-09 18:29:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131982581] [2024-11-09 18:29:13,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:13,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 18:29:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 18:29:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:29:13,674 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:15,878 INFO L93 Difference]: Finished difference Result 296 states and 362 transitions. [2024-11-09 18:29:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 18:29:15,878 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 18:29:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:15,880 INFO L225 Difference]: With dead ends: 296 [2024-11-09 18:29:15,880 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 18:29:15,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=869, Invalid=6441, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 18:29:15,885 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 82 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:15,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 517 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:29:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 18:29:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 229. [2024-11-09 18:29:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.219298245614035) internal successors, (278), 228 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 278 transitions. [2024-11-09 18:29:15,927 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 278 transitions. Word has length 57 [2024-11-09 18:29:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:15,927 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 278 transitions. [2024-11-09 18:29:15,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 278 transitions. [2024-11-09 18:29:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:29:15,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:15,928 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:15,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 18:29:16,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:16,129 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:16,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1191994826, now seen corresponding path program 3 times [2024-11-09 18:29:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:16,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331226283] [2024-11-09 18:29:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:16,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331226283] [2024-11-09 18:29:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331226283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070471784] [2024-11-09 18:29:16,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:29:16,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:16,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:16,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:29:16,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:29:16,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:16,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 18:29:16,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:16,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 18:29:16,965 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-09 18:29:16,965 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 35 treesize of output 19 [2024-11-09 18:29:17,116 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-09 18:29:17,117 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 58 treesize of output 42 [2024-11-09 18:29:17,284 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-09 18:29:17,284 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 58 treesize of output 42 [2024-11-09 18:29:17,479 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:29:17,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2024-11-09 18:29:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:17,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:17,849 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 19 treesize of output 17 [2024-11-09 18:29:17,855 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 23 treesize of output 16 [2024-11-09 18:29:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:29:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070471784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:17,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:17,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 35 [2024-11-09 18:29:17,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307000912] [2024-11-09 18:29:17,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:17,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 18:29:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:17,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 18:29:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:29:17,905 INFO L87 Difference]: Start difference. First operand 229 states and 278 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:19,130 INFO L93 Difference]: Finished difference Result 281 states and 342 transitions. [2024-11-09 18:29:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 18:29:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 18:29:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:19,131 INFO L225 Difference]: With dead ends: 281 [2024-11-09 18:29:19,131 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 18:29:19,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=736, Invalid=4094, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 18:29:19,133 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:19,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 274 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:29:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 18:29:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2024-11-09 18:29:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-09 18:29:19,151 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 57 [2024-11-09 18:29:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:19,152 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-09 18:29:19,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-09 18:29:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:29:19,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:19,152 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:19,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:19,354 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:19,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash 305911828, now seen corresponding path program 11 times [2024-11-09 18:29:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:19,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010039700] [2024-11-09 18:29:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:19,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010039700] [2024-11-09 18:29:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010039700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441850528] [2024-11-09 18:29:19,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:29:19,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:19,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:19,529 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:19,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:29:19,689 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:29:19,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:19,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:29:19,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:29:19,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:29:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441850528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:19,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:29:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258129449] [2024-11-09 18:29:19,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:19,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:29:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:29:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:29:19,931 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:29:20,123 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2024-11-09 18:29:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:29:20,123 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-09 18:29:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:29:20,124 INFO L225 Difference]: With dead ends: 190 [2024-11-09 18:29:20,124 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 18:29:20,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:29:20,125 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 123 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:29:20,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 131 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:29:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 18:29:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2024-11-09 18:29:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.127659574468085) internal successors, (106), 94 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2024-11-09 18:29:20,142 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 61 [2024-11-09 18:29:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:29:20,142 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2024-11-09 18:29:20,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2024-11-09 18:29:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:29:20,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:29:20,143 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:29:20,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 18:29:20,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:20,348 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:29:20,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:29:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -346056395, now seen corresponding path program 12 times [2024-11-09 18:29:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:29:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106185038] [2024-11-09 18:29:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:29:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:29:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:29:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:29:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:29:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106185038] [2024-11-09 18:29:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106185038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:29:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794331053] [2024-11-09 18:29:21,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:29:21,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:29:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:29:21,279 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:29:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:29:21,466 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:29:21,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:29:21,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 18:29:21,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:29:21,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:29:21,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:22,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:22,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:22,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:23,093 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-09 18:29:23,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 16 [2024-11-09 18:29:23,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:29:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:23,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:29:24,817 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-09 18:29:24,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 21 [2024-11-09 18:29:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:29:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794331053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:29:25,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:29:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 27] total 72 [2024-11-09 18:29:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150492130] [2024-11-09 18:29:25,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:29:25,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-09 18:29:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:29:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-09 18:29:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=4679, Unknown=0, NotChecked=0, Total=5112 [2024-11-09 18:29:25,632 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 72 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:29:33,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]