./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/ss2.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 e3a2069d11be89fa2c8e98300820eccf9d61bcc6c7ca5fd30afcaf42942b8548 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 21:12:10,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:12:10,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:12:10,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:12:10,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:12:10,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:12:10,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:12:10,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:12:10,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:12:10,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:12:10,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:12:10,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:12:10,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:12:10,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:12:10,528 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:12:10,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:12:10,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:12:10,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:12:10,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:12:10,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:12:10,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:12:10,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:12:10,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:12:10,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:12:10,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:12:10,535 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:12:10,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:12:10,535 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:12:10,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:12:10,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:12:10,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:12:10,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:12:10,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:12:10,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:12:10,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:12:10,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:12:10,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:12:10,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:12:10,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:12:10,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:12:10,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:12:10,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:12:10,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3a2069d11be89fa2c8e98300820eccf9d61bcc6c7ca5fd30afcaf42942b8548 [2024-11-21 21:12:10,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:12:10,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:12:10,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:12:10,824 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:12:10,824 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:12:10,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss2.c [2024-11-21 21:12:12,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:12:12,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:12:12,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss2.c [2024-11-21 21:12:12,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6984ff0/aa189cd9a23240d1ba3ccb29f0fc1683/FLAG421b3b989 [2024-11-21 21:12:12,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6984ff0/aa189cd9a23240d1ba3ccb29f0fc1683 [2024-11-21 21:12:12,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:12:12,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:12:12,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:12:12,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:12:12,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:12:12,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:12:12" (1/1) ... [2024-11-21 21:12:12,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5e5a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:12, skipping insertion in model container [2024-11-21 21:12:12,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:12:12" (1/1) ... [2024-11-21 21:12:12,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:12:12,967 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/ss2.c[586,599] [2024-11-21 21:12:12,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:12:12,995 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:12:13,004 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/ss2.c[586,599] [2024-11-21 21:12:13,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:12:13,027 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:12:13,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13 WrapperNode [2024-11-21 21:12:13,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:12:13,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:12:13,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:12:13,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:12:13,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,057 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2024-11-21 21:12:13,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:12:13,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:12:13,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:12:13,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:12:13,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,087 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 6, 7, 9]. 38 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 7 writes are split as follows [0, 0, 3, 4]. [2024-11-21 21:12:13,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:12:13,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:12:13,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:12:13,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:12:13,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (1/1) ... [2024-11-21 21:12:13,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:12:13,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:13,148 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) [2024-11-21 21:12:13,156 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 [2024-11-21 21:12:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 21:12:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:12:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 21:12:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 21:12:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 21:12:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 21:12:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 21:12:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 21:12:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 21:12:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:12:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 21:12:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 21:12:13,302 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:12:13,304 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:12:13,524 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-21 21:12:13,525 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:12:13,541 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:12:13,542 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-21 21:12:13,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:12:13 BoogieIcfgContainer [2024-11-21 21:12:13,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:12:13,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:12:13,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:12:13,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:12:13,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:12:12" (1/3) ... [2024-11-21 21:12:13,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b187d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:12:13, skipping insertion in model container [2024-11-21 21:12:13,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:13" (2/3) ... [2024-11-21 21:12:13,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b187d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:12:13, skipping insertion in model container [2024-11-21 21:12:13,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:12:13" (3/3) ... [2024-11-21 21:12:13,553 INFO L112 eAbstractionObserver]: Analyzing ICFG ss2.c [2024-11-21 21:12:13,569 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:12:13,569 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:12:13,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:12:13,642 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;@2666cd99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:12:13,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:12:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 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) [2024-11-21 21:12:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-21 21:12:13,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:13,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:13,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:13,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -642180410, now seen corresponding path program 1 times [2024-11-21 21:12:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300063771] [2024-11-21 21:12:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:12:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:12:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:13,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300063771] [2024-11-21 21:12:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300063771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:12:13,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:12:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:12:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855359437] [2024-11-21 21:12:13,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:12:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 21:12:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 21:12:13,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 21:12:13,906 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 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) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:13,926 INFO L93 Difference]: Finished difference Result 62 states and 92 transitions. [2024-11-21 21:12:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 21:12:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-21 21:12:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:13,937 INFO L225 Difference]: With dead ends: 62 [2024-11-21 21:12:13,938 INFO L226 Difference]: Without dead ends: 29 [2024-11-21 21:12:13,940 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 [2024-11-21 21:12:13,946 INFO L432 NwaCegarLoop]: 40 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, 40 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 [2024-11-21 21:12:13,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:12:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-21 21:12:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-21 21:12:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-21 21:12:13,985 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2024-11-21 21:12:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:13,986 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-21 21:12:13,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-21 21:12:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-21 21:12:13,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:13,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:12:13,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:13,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1011332042, now seen corresponding path program 1 times [2024-11-21 21:12:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043251267] [2024-11-21 21:12:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:12:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:12:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:14,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:14,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043251267] [2024-11-21 21:12:14,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043251267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:12:14,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:12:14,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:12:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812992152] [2024-11-21 21:12:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:12:14,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:12:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:12:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:12:14,217 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:14,336 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2024-11-21 21:12:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:12:14,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-21 21:12:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:14,338 INFO L225 Difference]: With dead ends: 69 [2024-11-21 21:12:14,338 INFO L226 Difference]: Without dead ends: 47 [2024-11-21 21:12:14,338 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 [2024-11-21 21:12:14,339 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:14,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 19 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:12:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-21 21:12:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2024-11-21 21:12:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-21 21:12:14,357 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2024-11-21 21:12:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:14,358 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-21 21:12:14,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-21 21:12:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-21 21:12:14,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:14,360 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:14,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 21:12:14,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:14,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1890076394, now seen corresponding path program 1 times [2024-11-21 21:12:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695388607] [2024-11-21 21:12:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:12:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-21 21:12:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101912302] [2024-11-21 21:12:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:12:14,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:14,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:14,468 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) [2024-11-21 21:12:14,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:12:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:12:14,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-21 21:12:14,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:14,747 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 [2024-11-21 21:12:14,793 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 [2024-11-21 21:12:14,908 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 [2024-11-21 21:12:15,028 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 [2024-11-21 21:12:15,149 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 [2024-11-21 21:12:15,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-21 21:12:15,415 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 [2024-11-21 21:12:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:15,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:16,200 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 30 treesize of output 28 [2024-11-21 21:12:16,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2024-11-21 21:12:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:16,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695388607] [2024-11-21 21:12:16,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-21 21:12:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101912302] [2024-11-21 21:12:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101912302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:16,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-21 21:12:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2024-11-21 21:12:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223914450] [2024-11-21 21:12:16,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:16,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-21 21:12:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-21 21:12:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2024-11-21 21:12:16,343 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 36 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) [2024-11-21 21:12:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:18,044 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2024-11-21 21:12:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-21 21:12:18,044 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 36 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 32 [2024-11-21 21:12:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:18,046 INFO L225 Difference]: With dead ends: 100 [2024-11-21 21:12:18,046 INFO L226 Difference]: Without dead ends: 98 [2024-11-21 21:12:18,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=423, Invalid=2657, Unknown=0, NotChecked=0, Total=3080 [2024-11-21 21:12:18,049 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 137 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:18,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 220 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:12:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-21 21:12:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2024-11-21 21:12:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-11-21 21:12:18,063 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 32 [2024-11-21 21:12:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:18,064 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-11-21 21:12:18,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 36 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) [2024-11-21 21:12:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-11-21 21:12:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-21 21:12:18,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:18,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:18,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 21:12:18,269 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 [2024-11-21 21:12:18,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:18,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1237633832, now seen corresponding path program 2 times [2024-11-21 21:12:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542089934] [2024-11-21 21:12:18,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:12:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:18,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:12:18,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 21:12:18,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542089934] [2024-11-21 21:12:18,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542089934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:12:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040620856] [2024-11-21 21:12:18,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:12:18,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:18,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:18,473 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) [2024-11-21 21:12:18,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:12:18,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:12:18,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:18,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:12:18,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 21:12:18,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 21:12:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040620856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:18,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:12:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-21 21:12:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867452420] [2024-11-21 21:12:18,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:18,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 21:12:18,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 21:12:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-21 21:12:18,665 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:18,847 INFO L93 Difference]: Finished difference Result 152 states and 182 transitions. [2024-11-21 21:12:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 21:12:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-21 21:12:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:18,849 INFO L225 Difference]: With dead ends: 152 [2024-11-21 21:12:18,849 INFO L226 Difference]: Without dead ends: 82 [2024-11-21 21:12:18,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-21 21:12:18,850 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:18,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 47 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:12:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-21 21:12:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2024-11-21 21:12:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-21 21:12:18,873 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 34 [2024-11-21 21:12:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:18,873 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-21 21:12:18,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-21 21:12:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-21 21:12:18,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:18,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:18,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 21:12:19,075 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 [2024-11-21 21:12:19,076 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:19,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 999316006, now seen corresponding path program 3 times [2024-11-21 21:12:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:19,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130068322] [2024-11-21 21:12:19,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:12:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:19,113 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 21:12:19,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-21 21:12:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130068322] [2024-11-21 21:12:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130068322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:12:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635633553] [2024-11-21 21:12:19,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:12:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:19,215 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) [2024-11-21 21:12:19,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:12:19,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 21:12:19,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:19,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:12:19,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-21 21:12:19,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-21 21:12:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635633553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:19,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:12:19,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-21 21:12:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98879584] [2024-11-21 21:12:19,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:19,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 21:12:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 21:12:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-21 21:12:19,394 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:19,569 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-21 21:12:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-21 21:12:19,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-21 21:12:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:19,570 INFO L225 Difference]: With dead ends: 81 [2024-11-21 21:12:19,570 INFO L226 Difference]: Without dead ends: 64 [2024-11-21 21:12:19,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:12:19,571 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:19,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 49 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:12:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-21 21:12:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2024-11-21 21:12:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 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) [2024-11-21 21:12:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-21 21:12:19,587 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 36 [2024-11-21 21:12:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:19,587 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-21 21:12:19,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-21 21:12:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-21 21:12:19,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:19,589 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:19,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 21:12:19,789 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 [2024-11-21 21:12:19,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:19,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 772187038, now seen corresponding path program 4 times [2024-11-21 21:12:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656633453] [2024-11-21 21:12:19,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:12:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:19,865 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:12:19,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-21 21:12:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513288916] [2024-11-21 21:12:19,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:12:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:19,870 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) [2024-11-21 21:12:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 21:12:20,053 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:12:20,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:20,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-21 21:12:20,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:20,074 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 [2024-11-21 21:12:20,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-21 21:12:20,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:12:20,162 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 22 [2024-11-21 21:12:24,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-21 21:12:24,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-21 21:12:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:12:24,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:12:24,805 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-21 21:12:24,806 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-21 21:12:24,807 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-21 21:12:24,818 INFO L349 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2024-11-21 21:12:24,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 66 [2024-11-21 21:12:24,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-21 21:12:24,999 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-21 21:12:25,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:25,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 53 [2024-11-21 21:12:25,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:25,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-21 21:12:25,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:25,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-21 21:12:25,463 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 [2024-11-21 21:12:25,588 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 [2024-11-21 21:12:25,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:25,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-21 21:12:25,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:25,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-21 21:12:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:26,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:27,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-21 21:12:27,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-21 21:12:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656633453] [2024-11-21 21:12:27,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-21 21:12:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513288916] [2024-11-21 21:12:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513288916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:27,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-21 21:12:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 67 [2024-11-21 21:12:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068916560] [2024-11-21 21:12:27,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:27,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-21 21:12:27,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-21 21:12:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=3948, Unknown=1, NotChecked=0, Total=4422 [2024-11-21 21:12:27,795 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 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) [2024-11-21 21:12:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:37,830 INFO L93 Difference]: Finished difference Result 224 states and 255 transitions. [2024-11-21 21:12:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-21 21:12:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-21 21:12:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:37,832 INFO L225 Difference]: With dead ends: 224 [2024-11-21 21:12:37,832 INFO L226 Difference]: Without dead ends: 159 [2024-11-21 21:12:37,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5288 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2571, Invalid=16334, Unknown=1, NotChecked=0, Total=18906 [2024-11-21 21:12:37,839 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 351 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:37,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 638 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 21:12:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-21 21:12:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 86. [2024-11-21 21:12:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-21 21:12:37,862 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 44 [2024-11-21 21:12:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:37,862 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-21 21:12:37,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 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) [2024-11-21 21:12:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-21 21:12:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-21 21:12:37,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:37,864 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:37,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 21:12:38,067 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 [2024-11-21 21:12:38,068 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 449784796, now seen corresponding path program 5 times [2024-11-21 21:12:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155751729] [2024-11-21 21:12:38,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 21:12:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:38,129 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-21 21:12:38,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 21:12:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155751729] [2024-11-21 21:12:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155751729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:12:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959286923] [2024-11-21 21:12:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 21:12:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:38,269 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) [2024-11-21 21:12:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 21:12:38,403 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-21 21:12:38,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:38,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 21:12:38,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 21:12:38,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 21:12:38,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959286923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:38,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:12:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-21 21:12:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441089042] [2024-11-21 21:12:38,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:38,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-21 21:12:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-21 21:12:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-21 21:12:38,511 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:38,747 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2024-11-21 21:12:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 21:12:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-21 21:12:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:38,748 INFO L225 Difference]: With dead ends: 151 [2024-11-21 21:12:38,748 INFO L226 Difference]: Without dead ends: 105 [2024-11-21 21:12:38,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-21 21:12:38,749 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 117 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:38,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 77 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:12:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-21 21:12:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 57. [2024-11-21 21:12:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.125) internal successors, (63), 56 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) [2024-11-21 21:12:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-21 21:12:38,768 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 46 [2024-11-21 21:12:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:38,768 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-21 21:12:38,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-21 21:12:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-21 21:12:38,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:38,769 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:38,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 21:12:38,971 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 [2024-11-21 21:12:38,971 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:38,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 763674452, now seen corresponding path program 6 times [2024-11-21 21:12:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:38,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772243963] [2024-11-21 21:12:38,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 21:12:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:39,013 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-21 21:12:39,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:12:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772243963] [2024-11-21 21:12:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772243963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:12:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93768995] [2024-11-21 21:12:39,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 21:12:39,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:39,154 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) [2024-11-21 21:12:39,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 21:12:39,263 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-21 21:12:39,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:12:39,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 21:12:39,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:12:39,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:12:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93768995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:39,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:12:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-21 21:12:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752807992] [2024-11-21 21:12:39,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:39,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 21:12:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 21:12:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:12:39,377 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:12:39,517 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2024-11-21 21:12:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:12:39,518 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-21 21:12:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:12:39,518 INFO L225 Difference]: With dead ends: 130 [2024-11-21 21:12:39,518 INFO L226 Difference]: Without dead ends: 83 [2024-11-21 21:12:39,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-21 21:12:39,519 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:12:39,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 59 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:12:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-21 21:12:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2024-11-21 21:12:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 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) [2024-11-21 21:12:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-21 21:12:39,535 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 54 [2024-11-21 21:12:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:12:39,535 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-21 21:12:39,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:12:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-21 21:12:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-21 21:12:39,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:12:39,536 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:12:39,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-21 21:12:39,737 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 [2024-11-21 21:12:39,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:12:39,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:12:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 208953938, now seen corresponding path program 7 times [2024-11-21 21:12:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:12:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310814487] [2024-11-21 21:12:39,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 21:12:39,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:12:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-21 21:12:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452185753] [2024-11-21 21:12:39,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 21:12:39,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:12:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:12:39,789 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) [2024-11-21 21:12:39,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 21:12:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:12:39,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-21 21:12:39,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:12:39,915 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 [2024-11-21 21:12:39,929 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 [2024-11-21 21:12:39,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 21:12:40,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-21 21:12:40,139 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 [2024-11-21 21:12:40,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-21 21:12:40,295 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 [2024-11-21 21:12:40,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:40,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:40,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:40,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:40,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:40,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:40,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:41,026 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 [2024-11-21 21:12:41,135 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 [2024-11-21 21:12:41,249 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 [2024-11-21 21:12:41,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:41,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:41,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:12:41,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-21 21:12:41,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:12:41,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:12:41,651 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-21 21:12:41,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 54 [2024-11-21 21:12:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:41,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:12:46,761 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 792 treesize of output 746 [2024-11-21 21:12:46,873 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-21 21:12:46,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3988385 treesize of output 3718945 [2024-11-21 21:12:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:12:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:12:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310814487] [2024-11-21 21:12:47,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-21 21:12:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452185753] [2024-11-21 21:12:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452185753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:12:47,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-21 21:12:47,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 83 [2024-11-21 21:12:47,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045709891] [2024-11-21 21:12:47,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-21 21:12:47,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-21 21:12:47,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:12:47,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-21 21:12:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6287, Unknown=0, NotChecked=0, Total=6806 [2024-11-21 21:12:47,233 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 83 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:13:13,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-21 21:13:17,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:13:17,364 INFO L93 Difference]: Finished difference Result 227 states and 254 transitions. [2024-11-21 21:13:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-21 21:13:17,365 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-21 21:13:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:13:17,366 INFO L225 Difference]: With dead ends: 227 [2024-11-21 21:13:17,366 INFO L226 Difference]: Without dead ends: 174 [2024-11-21 21:13:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4258 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1611, Invalid=14391, Unknown=0, NotChecked=0, Total=16002 [2024-11-21 21:13:17,369 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 256 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 322 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:13:17,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 714 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 3666 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2024-11-21 21:13:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-21 21:13:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 112. [2024-11-21 21:13:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 111 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) [2024-11-21 21:13:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2024-11-21 21:13:17,410 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 56 [2024-11-21 21:13:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:13:17,410 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2024-11-21 21:13:17,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:13:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2024-11-21 21:13:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-21 21:13:17,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:13:17,411 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:13:17,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 21:13:17,612 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 [2024-11-21 21:13:17,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:13:17,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:13:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -301515312, now seen corresponding path program 8 times [2024-11-21 21:13:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:13:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367315366] [2024-11-21 21:13:17,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:13:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:13:17,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:13:17,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:13:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:13:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:13:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367315366] [2024-11-21 21:13:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367315366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:13:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718236022] [2024-11-21 21:13:17,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:13:17,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:13:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:13:17,850 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) [2024-11-21 21:13:17,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 21:13:17,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:13:17,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:13:17,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-21 21:13:17,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:13:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:13:18,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:13:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 21:13:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718236022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:13:18,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:13:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-21 21:13:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383863745] [2024-11-21 21:13:18,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:13:18,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-21 21:13:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:13:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-21 21:13:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-21 21:13:18,088 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:13:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:13:18,543 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2024-11-21 21:13:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 21:13:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-21 21:13:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:13:18,545 INFO L225 Difference]: With dead ends: 196 [2024-11-21 21:13:18,545 INFO L226 Difference]: Without dead ends: 157 [2024-11-21 21:13:18,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 102 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-21 21:13:18,546 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 221 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:13:18,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 150 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 21:13:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-21 21:13:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 122. [2024-11-21 21:13:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0743801652892562) internal successors, (130), 121 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:13:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2024-11-21 21:13:18,585 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 58 [2024-11-21 21:13:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:13:18,585 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2024-11-21 21:13:18,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:13:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2024-11-21 21:13:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-21 21:13:18,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:13:18,586 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:13:18,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 21:13:18,787 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 [2024-11-21 21:13:18,787 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:13:18,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:13:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1172628798, now seen corresponding path program 1 times [2024-11-21 21:13:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:13:18,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142391581] [2024-11-21 21:13:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:13:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:13:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat