./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1.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 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:37:17,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:37:17,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:37:17,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:37:17,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:37:17,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:37:17,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:37:17,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:37:17,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:37:17,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:37:17,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:37:17,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:37:17,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:37:17,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:37:17,897 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:37:17,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:37:17,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:37:17,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:37:17,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:37:17,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:37:17,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:37:17,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:37:17,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:37:17,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:37:17,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:37:17,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:37:17,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:37:17,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:37:17,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:37:17,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:37:17,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:37:17,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:37:17,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:37:17,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:37:17,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:37:17,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:37:17,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:37:17,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:37:17,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:37:17,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:37:17,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:37:17,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:37:17,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 [2024-10-13 22:37:18,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:37:18,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:37:18,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:37:18,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:37:18,142 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:37:18,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1.c [2024-10-13 22:37:19,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:37:19,650 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:37:19,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1.c [2024-10-13 22:37:19,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b1d8265/d9a56c8eb2f349ed927c686a433f02c7/FLAG1e7761566 [2024-10-13 22:37:19,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b1d8265/d9a56c8eb2f349ed927c686a433f02c7 [2024-10-13 22:37:19,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:37:19,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:37:19,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:37:19,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:37:19,696 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:37:19,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:37:19" (1/1) ... [2024-10-13 22:37:19,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8c5663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:19, skipping insertion in model container [2024-10-13 22:37:19,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:37:19" (1/1) ... [2024-10-13 22:37:19,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:37:19,980 WARN L248 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/ss1.c[586,599] [2024-10-13 22:37:20,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:37:20,028 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:37:20,039 WARN L248 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/ss1.c[586,599] [2024-10-13 22:37:20,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:37:20,067 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:37:20,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20 WrapperNode [2024-10-13 22:37:20,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:37:20,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:37:20,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:37:20,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:37:20,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,132 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-10-13 22:37:20,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:37:20,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:37:20,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:37:20,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:37:20,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,173 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 6, 7, 5]. 35 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 5 writes are split as follows [0, 0, 3, 2]. [2024-10-13 22:37:20,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:37:20,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:37:20,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:37:20,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:37:20,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (1/1) ... [2024-10-13 22:37:20,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:37:20,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:20,251 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) [2024-10-13 22:37:20,257 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 [2024-10-13 22:37:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:37:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:37:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:37:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 22:37:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 22:37:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:37:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:37:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:37:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 22:37:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 22:37:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 22:37:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:37:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:37:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:37:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:37:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 22:37:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 22:37:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:37:20,500 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:37:20,501 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:37:20,646 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-13 22:37:20,646 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:37:20,678 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:37:20,679 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 22:37:20,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:37:20 BoogieIcfgContainer [2024-10-13 22:37:20,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:37:20,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:37:20,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:37:20,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:37:20,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:37:19" (1/3) ... [2024-10-13 22:37:20,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0962d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:37:20, skipping insertion in model container [2024-10-13 22:37:20,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:20" (2/3) ... [2024-10-13 22:37:20,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0962d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:37:20, skipping insertion in model container [2024-10-13 22:37:20,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:37:20" (3/3) ... [2024-10-13 22:37:20,688 INFO L112 eAbstractionObserver]: Analyzing ICFG ss1.c [2024-10-13 22:37:20,701 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:37:20,702 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:37:20,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:37:20,773 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;@52751fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:37:20,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:37:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 22:37:20,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:20,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:20,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:20,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1804282323, now seen corresponding path program 1 times [2024-10-13 22:37:20,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450452211] [2024-10-13 22:37:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:20,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450452211] [2024-10-13 22:37:20,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450452211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:37:20,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:37:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:37:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660074529] [2024-10-13 22:37:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:37:21,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:37:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:37:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:37:21,045 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:21,090 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2024-10-13 22:37:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:37:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-13 22:37:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:21,100 INFO L225 Difference]: With dead ends: 33 [2024-10-13 22:37:21,100 INFO L226 Difference]: Without dead ends: 15 [2024-10-13 22:37:21,102 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 [2024-10-13 22:37:21,104 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:21,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:37:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-13 22:37:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-13 22:37:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-13 22:37:21,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 14 [2024-10-13 22:37:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:21,153 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-13 22:37:21,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-13 22:37:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 22:37:21,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:21,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:21,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:37:21,154 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:21,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2062269015, now seen corresponding path program 1 times [2024-10-13 22:37:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:21,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320037519] [2024-10-13 22:37:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320037519] [2024-10-13 22:37:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320037519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:37:21,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:37:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:37:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099137480] [2024-10-13 22:37:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:37:21,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:37:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:37:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:37:21,423 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:21,485 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-10-13 22:37:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:37:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-13 22:37:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:21,486 INFO L225 Difference]: With dead ends: 29 [2024-10-13 22:37:21,486 INFO L226 Difference]: Without dead ends: 19 [2024-10-13 22:37:21,486 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 [2024-10-13 22:37:21,487 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:21,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-13 22:37:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-13 22:37:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-13 22:37:21,500 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2024-10-13 22:37:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:21,500 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-13 22:37:21,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-13 22:37:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-13 22:37:21,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:21,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:21,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:37:21,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:21,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1024635914, now seen corresponding path program 1 times [2024-10-13 22:37:21,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:21,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212091197] [2024-10-13 22:37:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:21,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:37:21,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538673392] [2024-10-13 22:37:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:21,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:21,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:21,570 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) [2024-10-13 22:37:21,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:37:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:21,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-13 22:37:21,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:21,762 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 [2024-10-13 22:37:21,813 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 [2024-10-13 22:37:21,940 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 [2024-10-13 22:37:22,015 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 [2024-10-13 22:37:22,120 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 [2024-10-13 22:37:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:22,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:22,444 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 [2024-10-13 22:37:22,451 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 [2024-10-13 22:37:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212091197] [2024-10-13 22:37:22,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:37:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538673392] [2024-10-13 22:37:22,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538673392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:22,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:37:22,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-10-13 22:37:22,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933861794] [2024-10-13 22:37:22,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:22,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 22:37:22,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 22:37:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-10-13 22:37:22,569 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:22,876 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-10-13 22:37:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 22:37:22,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 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 18 [2024-10-13 22:37:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:22,878 INFO L225 Difference]: With dead ends: 39 [2024-10-13 22:37:22,878 INFO L226 Difference]: Without dead ends: 30 [2024-10-13 22:37:22,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2024-10-13 22:37:22,881 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:22,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 64 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:37:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-13 22:37:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-10-13 22:37:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-10-13 22:37:22,892 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 18 [2024-10-13 22:37:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:22,892 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-10-13 22:37:22,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-10-13 22:37:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 22:37:22,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:22,894 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:22,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 22:37:23,095 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 [2024-10-13 22:37:23,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:23,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1674248393, now seen corresponding path program 2 times [2024-10-13 22:37:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519421092] [2024-10-13 22:37:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:23,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519421092] [2024-10-13 22:37:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519421092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:23,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839635159] [2024-10-13 22:37:23,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:37:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:23,232 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) [2024-10-13 22:37:23,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:37:23,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:37:23,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:23,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:37:23,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839635159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:23,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 22:37:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404713879] [2024-10-13 22:37:23,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:23,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 22:37:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 22:37:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:37:23,408 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:23,503 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-10-13 22:37:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 22:37:23,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-13 22:37:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:23,505 INFO L225 Difference]: With dead ends: 53 [2024-10-13 22:37:23,505 INFO L226 Difference]: Without dead ends: 33 [2024-10-13 22:37:23,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:37:23,506 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:23,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-13 22:37:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-10-13 22:37:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-10-13 22:37:23,518 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2024-10-13 22:37:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:23,519 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-10-13 22:37:23,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-10-13 22:37:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 22:37:23,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:23,520 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:23,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 22:37:23,721 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 [2024-10-13 22:37:23,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:23,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -567327678, now seen corresponding path program 3 times [2024-10-13 22:37:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643631135] [2024-10-13 22:37:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643631135] [2024-10-13 22:37:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643631135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998561197] [2024-10-13 22:37:23,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:37:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:23,849 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) [2024-10-13 22:37:23,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:37:23,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 22:37:23,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:23,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:37:23,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:37:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998561197] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:23,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 22:37:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268544920] [2024-10-13 22:37:23,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:23,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 22:37:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 22:37:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:37:23,980 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:24,064 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-10-13 22:37:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 22:37:24,065 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-13 22:37:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:24,065 INFO L225 Difference]: With dead ends: 33 [2024-10-13 22:37:24,066 INFO L226 Difference]: Without dead ends: 23 [2024-10-13 22:37:24,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-13 22:37:24,067 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:24,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-13 22:37:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-13 22:37:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-10-13 22:37:24,078 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2024-10-13 22:37:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:24,078 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-10-13 22:37:24,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-10-13 22:37:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 22:37:24,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:24,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:24,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 22:37:24,283 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 [2024-10-13 22:37:24,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:24,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1782899895, now seen corresponding path program 4 times [2024-10-13 22:37:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:24,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417013411] [2024-10-13 22:37:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:24,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:37:24,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367616001] [2024-10-13 22:37:24,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:37:24,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:24,340 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) [2024-10-13 22:37:24,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:37:24,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:37:24,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:24,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-13 22:37:24,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:24,450 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 [2024-10-13 22:37:24,483 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 [2024-10-13 22:37:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:37:24,542 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 [2024-10-13 22:37:28,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-13 22:37:28,743 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 33 treesize of output 21 [2024-10-13 22:37:28,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:37:28,978 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 22:37:28,978 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 22:37:28,987 INFO L349 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2024-10-13 22:37:28,988 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 59 treesize of output 65 [2024-10-13 22:37:29,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:29,048 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 [2024-10-13 22:37:29,128 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 [2024-10-13 22:37:29,162 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 [2024-10-13 22:37:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:29,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:29,659 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 24 treesize of output 22 [2024-10-13 22:37:29,661 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 32 treesize of output 30 [2024-10-13 22:37:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417013411] [2024-10-13 22:37:29,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:37:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367616001] [2024-10-13 22:37:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367616001] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:29,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:37:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2024-10-13 22:37:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651848198] [2024-10-13 22:37:29,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:29,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-13 22:37:29,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-13 22:37:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=921, Unknown=1, NotChecked=0, Total=1056 [2024-10-13 22:37:29,699 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 33 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:33,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 22:37:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:34,577 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-10-13 22:37:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 22:37:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-13 22:37:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:34,578 INFO L225 Difference]: With dead ends: 46 [2024-10-13 22:37:34,578 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 22:37:34,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=251, Invalid=1728, Unknown=1, NotChecked=0, Total=1980 [2024-10-13 22:37:34,581 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:34,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 357 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-13 22:37:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 22:37:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2024-10-13 22:37:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-10-13 22:37:34,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2024-10-13 22:37:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:34,593 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-10-13 22:37:34,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-10-13 22:37:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 22:37:34,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:34,593 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:34,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:37:34,797 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 [2024-10-13 22:37:34,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:34,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1866676239, now seen corresponding path program 5 times [2024-10-13 22:37:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:34,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777462967] [2024-10-13 22:37:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:37:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777462967] [2024-10-13 22:37:34,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777462967] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353424393] [2024-10-13 22:37:34,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:37:34,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:34,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:34,975 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) [2024-10-13 22:37:34,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:37:35,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 22:37:35,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:35,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:37:35,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:37:35,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:37:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353424393] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:35,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:37:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470738910] [2024-10-13 22:37:35,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:35,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:37:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:37:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:37:35,231 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:35,363 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-10-13 22:37:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:37:35,363 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 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 23 [2024-10-13 22:37:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:35,364 INFO L225 Difference]: With dead ends: 52 [2024-10-13 22:37:35,364 INFO L226 Difference]: Without dead ends: 35 [2024-10-13 22:37:35,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:37:35,365 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:35,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-13 22:37:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-10-13 22:37:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-10-13 22:37:35,386 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2024-10-13 22:37:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:35,386 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-10-13 22:37:35,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-10-13 22:37:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-13 22:37:35,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:35,387 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:35,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 22:37:35,588 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 [2024-10-13 22:37:35,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:35,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash 161881893, now seen corresponding path program 6 times [2024-10-13 22:37:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:35,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717586245] [2024-10-13 22:37:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 22:37:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717586245] [2024-10-13 22:37:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717586245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:35,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143482503] [2024-10-13 22:37:35,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:37:35,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:35,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:35,800 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) [2024-10-13 22:37:35,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:37:35,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 22:37:35,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:35,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:37:35,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 22:37:36,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 22:37:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143482503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:36,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:37:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335486770] [2024-10-13 22:37:36,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:36,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:37:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:37:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:37:36,108 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:36,258 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-10-13 22:37:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 22:37:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 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 24 [2024-10-13 22:37:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:36,259 INFO L225 Difference]: With dead ends: 35 [2024-10-13 22:37:36,259 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 22:37:36,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:37:36,259 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:36,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 22:37:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-13 22:37:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-10-13 22:37:36,275 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2024-10-13 22:37:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:36,279 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-10-13 22:37:36,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-10-13 22:37:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-13 22:37:36,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:36,280 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:36,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 22:37:36,480 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 [2024-10-13 22:37:36,484 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:36,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1929124970, now seen corresponding path program 7 times [2024-10-13 22:37:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266854887] [2024-10-13 22:37:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:37:36,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49330157] [2024-10-13 22:37:36,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:37:36,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:36,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:36,547 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) [2024-10-13 22:37:36,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:37:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:36,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-10-13 22:37:36,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:36,705 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 [2024-10-13 22:37:36,731 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 [2024-10-13 22:37:36,760 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 [2024-10-13 22:37:36,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:36,808 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 [2024-10-13 22:37:36,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:37:37,020 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 [2024-10-13 22:37:37,069 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 [2024-10-13 22:37:37,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:37,199 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 [2024-10-13 22:37:37,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:37,262 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 [2024-10-13 22:37:37,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:37,358 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 [2024-10-13 22:37:37,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:37:37,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:37:37,572 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 [2024-10-13 22:37:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:37,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:38,346 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 110 treesize of output 104 [2024-10-13 22:37:38,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:38,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 15045 treesize of output 14405 [2024-10-13 22:37:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:38,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:38,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266854887] [2024-10-13 22:37:38,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:37:38,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49330157] [2024-10-13 22:37:38,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49330157] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:38,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:37:38,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2024-10-13 22:37:38,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035623329] [2024-10-13 22:37:38,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:38,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-13 22:37:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-13 22:37:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2024-10-13 22:37:38,680 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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) [2024-10-13 22:37:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:41,914 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-10-13 22:37:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-13 22:37:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-13 22:37:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:41,917 INFO L225 Difference]: With dead ends: 68 [2024-10-13 22:37:41,920 INFO L226 Difference]: Without dead ends: 57 [2024-10-13 22:37:41,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2024-10-13 22:37:41,922 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:41,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 102 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 22:37:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-13 22:37:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2024-10-13 22:37:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-10-13 22:37:41,945 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 26 [2024-10-13 22:37:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:41,946 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-10-13 22:37:41,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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) [2024-10-13 22:37:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-10-13 22:37:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-13 22:37:41,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:41,947 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:41,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:37:42,151 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 [2024-10-13 22:37:42,153 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:42,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash 351361943, now seen corresponding path program 8 times [2024-10-13 22:37:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819911194] [2024-10-13 22:37:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819911194] [2024-10-13 22:37:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819911194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101294180] [2024-10-13 22:37:42,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:37:42,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:42,268 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) [2024-10-13 22:37:42,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:37:42,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:37:42,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:42,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 22:37:42,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:42,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101294180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:42,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:42,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-13 22:37:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534989723] [2024-10-13 22:37:42,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:42,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 22:37:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 22:37:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:37:42,489 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:42,625 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2024-10-13 22:37:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 22:37:42,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-13 22:37:42,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:42,626 INFO L225 Difference]: With dead ends: 75 [2024-10-13 22:37:42,626 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 22:37:42,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:37:42,627 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:42,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 37 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:42,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 22:37:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2024-10-13 22:37:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-10-13 22:37:42,640 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 27 [2024-10-13 22:37:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:42,640 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-10-13 22:37:42,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-10-13 22:37:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-13 22:37:42,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:42,641 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:42,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 22:37:42,841 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 [2024-10-13 22:37:42,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:42,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:42,842 INFO L85 PathProgramCache]: Analyzing trace with hash 656330722, now seen corresponding path program 9 times [2024-10-13 22:37:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:42,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362118483] [2024-10-13 22:37:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:42,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362118483] [2024-10-13 22:37:42,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362118483] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305373302] [2024-10-13 22:37:42,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:37:42,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:42,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:42,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:37:42,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:37:43,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 22:37:43,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:43,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 22:37:43,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:43,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:37:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305373302] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:43,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-13 22:37:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079386197] [2024-10-13 22:37:43,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:43,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 22:37:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 22:37:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:37:43,151 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:43,271 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-10-13 22:37:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 22:37:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-13 22:37:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:43,272 INFO L225 Difference]: With dead ends: 45 [2024-10-13 22:37:43,272 INFO L226 Difference]: Without dead ends: 31 [2024-10-13 22:37:43,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-10-13 22:37:43,273 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:43,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:43,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-13 22:37:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-13 22:37:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-10-13 22:37:43,282 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 27 [2024-10-13 22:37:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:43,282 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-10-13 22:37:43,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-10-13 22:37:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-13 22:37:43,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:43,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:43,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 22:37:43,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:43,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:43,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1395037975, now seen corresponding path program 10 times [2024-10-13 22:37:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996749938] [2024-10-13 22:37:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:37:43,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146856120] [2024-10-13 22:37:43,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:37:43,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:43,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:43,526 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:37:43,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:37:43,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:37:43,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:43,657 WARN L253 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-10-13 22:37:43,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:43,688 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 [2024-10-13 22:37:43,705 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 [2024-10-13 22:37:43,731 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 [2024-10-13 22:37:43,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:43,761 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 [2024-10-13 22:37:43,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:43,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-13 22:37:43,932 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 [2024-10-13 22:37:43,963 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 [2024-10-13 22:37:44,005 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 [2024-10-13 22:37:44,054 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 [2024-10-13 22:37:44,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:44,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-10-13 22:37:44,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:44,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-10-13 22:37:44,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:44,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-10-13 22:37:44,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:37:44,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-10-13 22:37:44,422 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 [2024-10-13 22:37:44,477 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 [2024-10-13 22:37:44,527 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 [2024-10-13 22:37:44,598 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 [2024-10-13 22:37:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:44,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:37:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996749938] [2024-10-13 22:37:45,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:37:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146856120] [2024-10-13 22:37:45,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146856120] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:45,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:37:45,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 50 [2024-10-13 22:37:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108641216] [2024-10-13 22:37:45,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:45,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 22:37:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 22:37:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2164, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 22:37:45,747 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 50 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:50,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-13 22:37:51,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-13 22:37:54,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-13 22:37:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:57,850 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2024-10-13 22:37:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-10-13 22:37:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-13 22:37:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:57,851 INFO L225 Difference]: With dead ends: 123 [2024-10-13 22:37:57,851 INFO L226 Difference]: Without dead ends: 109 [2024-10-13 22:37:57,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1120, Invalid=9182, Unknown=0, NotChecked=0, Total=10302 [2024-10-13 22:37:57,854 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 99 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:57,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 112 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-10-13 22:37:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-13 22:37:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2024-10-13 22:37:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 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) [2024-10-13 22:37:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2024-10-13 22:37:57,897 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 30 [2024-10-13 22:37:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:57,897 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2024-10-13 22:37:57,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2024-10-13 22:37:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-13 22:37:57,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:57,899 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:57,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 22:37:58,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 22:37:58,100 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:58,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 321198134, now seen corresponding path program 11 times [2024-10-13 22:37:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:58,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408286386] [2024-10-13 22:37:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 22:37:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408286386] [2024-10-13 22:37:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408286386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156105375] [2024-10-13 22:37:58,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:37:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:58,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:37:58,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:37:58,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 22:37:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:58,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 22:37:58,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 22:37:58,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 22:37:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156105375] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:58,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-13 22:37:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125239126] [2024-10-13 22:37:58,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:58,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:37:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:37:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:37:58,630 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2024-10-13 22:37:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:58,833 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2024-10-13 22:37:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 22:37:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) Word has length 31 [2024-10-13 22:37:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:58,834 INFO L225 Difference]: With dead ends: 116 [2024-10-13 22:37:58,834 INFO L226 Difference]: Without dead ends: 62 [2024-10-13 22:37:58,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:37:58,835 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:58,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-13 22:37:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2024-10-13 22:37:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-10-13 22:37:58,885 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 31 [2024-10-13 22:37:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:58,885 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-10-13 22:37:58,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2024-10-13 22:37:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-10-13 22:37:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-13 22:37:58,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:58,886 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:58,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 22:37:59,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 22:37:59,087 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:37:59,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:37:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 108881669, now seen corresponding path program 12 times [2024-10-13 22:37:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:37:59,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152884404] [2024-10-13 22:37:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:37:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:37:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:37:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-13 22:37:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:37:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152884404] [2024-10-13 22:37:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152884404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:37:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943391717] [2024-10-13 22:37:59,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:37:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:37:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:37:59,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:37:59,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 22:37:59,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 22:37:59,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:37:59,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 22:37:59,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:37:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-13 22:37:59,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:37:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-13 22:37:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943391717] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:37:59,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:37:59,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-13 22:37:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440133229] [2024-10-13 22:37:59,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:37:59,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:37:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:37:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:37:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:37:59,635 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2024-10-13 22:37:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:37:59,773 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-10-13 22:37:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 22:37:59,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) Word has length 32 [2024-10-13 22:37:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:37:59,775 INFO L225 Difference]: With dead ends: 62 [2024-10-13 22:37:59,775 INFO L226 Difference]: Without dead ends: 46 [2024-10-13 22:37:59,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:37:59,776 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:37:59,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:37:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-13 22:37:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2024-10-13 22:37:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:37:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-10-13 22:37:59,804 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2024-10-13 22:37:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:37:59,804 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-10-13 22:37:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2024-10-13 22:37:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-10-13 22:37:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-13 22:37:59,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:37:59,805 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:37:59,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 22:38:00,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 22:38:00,009 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:00,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1694633162, now seen corresponding path program 13 times [2024-10-13 22:38:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:00,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230633254] [2024-10-13 22:38:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:38:00,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983509309] [2024-10-13 22:38:00,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:38:00,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:00,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:00,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:00,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 22:38:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:00,240 WARN L253 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-10-13 22:38:00,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:00,252 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 [2024-10-13 22:38:00,269 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 [2024-10-13 22:38:00,296 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 [2024-10-13 22:38:00,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,331 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 [2024-10-13 22:38:00,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-13 22:38:00,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-10-13 22:38:00,506 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 [2024-10-13 22:38:00,559 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 [2024-10-13 22:38:00,598 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 [2024-10-13 22:38:00,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:00,690 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 [2024-10-13 22:38:00,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-10-13 22:38:00,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-10-13 22:38:00,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-10-13 22:38:00,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:00,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-10-13 22:38:01,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:01,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-10-13 22:38:01,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:01,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:01,230 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 [2024-10-13 22:38:01,295 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 [2024-10-13 22:38:01,344 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 [2024-10-13 22:38:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:01,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:05,258 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 255 treesize of output 245 [2024-10-13 22:38:05,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:05,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1002904888 treesize of output 984030520 [2024-10-13 22:38:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230633254] [2024-10-13 22:38:05,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:38:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983509309] [2024-10-13 22:38:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983509309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:05,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:38:05,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2024-10-13 22:38:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66402372] [2024-10-13 22:38:05,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:05,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-13 22:38:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-13 22:38:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2695, Unknown=0, NotChecked=0, Total=2862 [2024-10-13 22:38:05,662 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:08,474 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2024-10-13 22:38:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 22:38:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-13 22:38:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:08,475 INFO L225 Difference]: With dead ends: 75 [2024-10-13 22:38:08,475 INFO L226 Difference]: Without dead ends: 62 [2024-10-13 22:38:08,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=222, Invalid=3318, Unknown=0, NotChecked=0, Total=3540 [2024-10-13 22:38:08,476 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:08,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 22:38:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-13 22:38:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2024-10-13 22:38:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-10-13 22:38:08,526 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 34 [2024-10-13 22:38:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:08,527 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-10-13 22:38:08,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-10-13 22:38:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-13 22:38:08,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:08,528 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:08,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 22:38:08,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 22:38:08,729 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:08,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -969326601, now seen corresponding path program 14 times [2024-10-13 22:38:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159710563] [2024-10-13 22:38:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:09,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159710563] [2024-10-13 22:38:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159710563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:38:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307288986] [2024-10-13 22:38:09,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:38:09,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:09,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:09,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:09,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 22:38:09,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:38:09,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:09,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 22:38:09,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:09,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307288986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:09,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:38:09,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-13 22:38:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263800061] [2024-10-13 22:38:09,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:09,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 22:38:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 22:38:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-13 22:38:09,425 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:09,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:09,789 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2024-10-13 22:38:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 22:38:09,790 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 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 35 [2024-10-13 22:38:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:09,791 INFO L225 Difference]: With dead ends: 97 [2024-10-13 22:38:09,791 INFO L226 Difference]: Without dead ends: 57 [2024-10-13 22:38:09,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-10-13 22:38:09,791 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:09,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:38:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-13 22:38:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-10-13 22:38:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-10-13 22:38:09,831 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 35 [2024-10-13 22:38:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:09,832 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-10-13 22:38:09,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-10-13 22:38:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-13 22:38:09,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:09,832 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:09,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 22:38:10,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:10,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:10,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1782721662, now seen corresponding path program 15 times [2024-10-13 22:38:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:10,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400317002] [2024-10-13 22:38:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400317002] [2024-10-13 22:38:10,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400317002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:38:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527419862] [2024-10-13 22:38:10,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:38:10,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:10,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:10,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:10,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 22:38:10,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 22:38:10,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:10,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 22:38:10,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:10,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:38:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527419862] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:10,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:38:10,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-13 22:38:10,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150383038] [2024-10-13 22:38:10,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:10,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 22:38:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 22:38:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-13 22:38:10,700 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:10,880 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2024-10-13 22:38:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 22:38:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 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 35 [2024-10-13 22:38:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:10,881 INFO L225 Difference]: With dead ends: 57 [2024-10-13 22:38:10,881 INFO L226 Difference]: Without dead ends: 39 [2024-10-13 22:38:10,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2024-10-13 22:38:10,882 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:10,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:38:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-13 22:38:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-13 22:38:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-10-13 22:38:10,919 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2024-10-13 22:38:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:10,919 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-10-13 22:38:10,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-10-13 22:38:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-13 22:38:10,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:10,920 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:10,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 22:38:11,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 22:38:11,124 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:11,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1025954167, now seen corresponding path program 16 times [2024-10-13 22:38:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170097118] [2024-10-13 22:38:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:38:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84686092] [2024-10-13 22:38:11,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:38:11,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:11,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:11,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:11,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 22:38:11,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:38:11,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:11,409 WARN L253 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-10-13 22:38:11,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:11,445 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 [2024-10-13 22:38:11,460 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 [2024-10-13 22:38:11,487 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 21 treesize of output 20 [2024-10-13 22:38:11,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:11,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-10-13 22:38:11,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:11,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-10-13 22:38:11,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:11,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-10-13 22:38:11,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:11,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-10-13 22:38:11,824 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 [2024-10-13 22:38:11,867 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 [2024-10-13 22:38:11,913 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 [2024-10-13 22:38:11,982 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 [2024-10-13 22:38:12,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:12,069 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 [2024-10-13 22:38:12,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 71 [2024-10-13 22:38:12,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 71 [2024-10-13 22:38:12,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 71 [2024-10-13 22:38:12,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 71 [2024-10-13 22:38:12,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 71 [2024-10-13 22:38:12,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:12,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 71 [2024-10-13 22:38:12,686 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 [2024-10-13 22:38:12,758 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 [2024-10-13 22:38:12,835 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 [2024-10-13 22:38:12,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:12,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:13,056 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 [2024-10-13 22:38:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:13,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170097118] [2024-10-13 22:38:15,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:38:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84686092] [2024-10-13 22:38:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84686092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:15,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:38:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33] total 66 [2024-10-13 22:38:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879348453] [2024-10-13 22:38:15,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:15,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-10-13 22:38:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-10-13 22:38:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=3802, Unknown=0, NotChecked=0, Total=4290 [2024-10-13 22:38:15,359 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:35,524 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2024-10-13 22:38:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-10-13 22:38:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-13 22:38:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:35,526 INFO L225 Difference]: With dead ends: 159 [2024-10-13 22:38:35,526 INFO L226 Difference]: Without dead ends: 143 [2024-10-13 22:38:35,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1920, Invalid=16170, Unknown=0, NotChecked=0, Total=18090 [2024-10-13 22:38:35,529 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:35,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 128 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-10-13 22:38:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-13 22:38:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 87. [2024-10-13 22:38:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.255813953488372) internal successors, (108), 86 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2024-10-13 22:38:35,622 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 38 [2024-10-13 22:38:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:35,622 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2024-10-13 22:38:35,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2024-10-13 22:38:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 22:38:35,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:35,623 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:35,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 22:38:35,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 22:38:35,824 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:35,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1764501974, now seen corresponding path program 17 times [2024-10-13 22:38:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:35,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69416760] [2024-10-13 22:38:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 22:38:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69416760] [2024-10-13 22:38:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69416760] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:38:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366566544] [2024-10-13 22:38:36,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:38:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:36,026 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:36,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 22:38:36,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-13 22:38:36,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:36,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 22:38:36,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 22:38:36,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 22:38:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366566544] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:36,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:38:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-10-13 22:38:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79776231] [2024-10-13 22:38:36,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:36,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 22:38:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 22:38:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-10-13 22:38:36,951 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) [2024-10-13 22:38:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:37,213 INFO L93 Difference]: Finished difference Result 148 states and 177 transitions. [2024-10-13 22:38:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 22:38:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) Word has length 39 [2024-10-13 22:38:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:37,215 INFO L225 Difference]: With dead ends: 148 [2024-10-13 22:38:37,215 INFO L226 Difference]: Without dead ends: 78 [2024-10-13 22:38:37,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-10-13 22:38:37,220 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:37,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:38:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-13 22:38:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-10-13 22:38:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2024-10-13 22:38:37,291 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 39 [2024-10-13 22:38:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:37,291 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2024-10-13 22:38:37,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) [2024-10-13 22:38:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2024-10-13 22:38:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 22:38:37,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:37,292 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:37,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-13 22:38:37,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:37,493 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:37,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 648877797, now seen corresponding path program 18 times [2024-10-13 22:38:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448162641] [2024-10-13 22:38:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-13 22:38:37,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:37,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448162641] [2024-10-13 22:38:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448162641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:38:37,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095040644] [2024-10-13 22:38:37,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:38:37,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:37,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:37,709 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:37,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 22:38:38,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-13 22:38:38,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:38,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 22:38:38,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-13 22:38:38,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-13 22:38:38,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095040644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:38,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:38:38,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-10-13 22:38:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956471284] [2024-10-13 22:38:38,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:38,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 22:38:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 22:38:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-10-13 22:38:38,411 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) [2024-10-13 22:38:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:38,660 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2024-10-13 22:38:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 22:38:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) Word has length 40 [2024-10-13 22:38:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:38,661 INFO L225 Difference]: With dead ends: 78 [2024-10-13 22:38:38,661 INFO L226 Difference]: Without dead ends: 58 [2024-10-13 22:38:38,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 22:38:38,662 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:38,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:38:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-13 22:38:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2024-10-13 22:38:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-10-13 22:38:38,704 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 40 [2024-10-13 22:38:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:38,704 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-10-13 22:38:38,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 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) [2024-10-13 22:38:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-10-13 22:38:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 22:38:38,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:38,704 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:38,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 22:38:38,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:38,905 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:38,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash 931494614, now seen corresponding path program 19 times [2024-10-13 22:38:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:38,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382569299] [2024-10-13 22:38:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:38:38,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246626591] [2024-10-13 22:38:38,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:38:38,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:38,989 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:38,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 22:38:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:39,152 WARN L253 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-10-13 22:38:39,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:39,162 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 [2024-10-13 22:38:39,173 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 [2024-10-13 22:38:39,187 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 [2024-10-13 22:38:39,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,207 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 [2024-10-13 22:38:39,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-13 22:38:39,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-10-13 22:38:39,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-10-13 22:38:39,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-10-13 22:38:39,507 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 [2024-10-13 22:38:39,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:38:39,608 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 [2024-10-13 22:38:39,663 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 [2024-10-13 22:38:39,713 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 [2024-10-13 22:38:39,764 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 [2024-10-13 22:38:39,813 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 [2024-10-13 22:38:39,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:39,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:40,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-10-13 22:38:40,476 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 [2024-10-13 22:38:40,543 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 [2024-10-13 22:38:40,642 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 [2024-10-13 22:38:40,732 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 [2024-10-13 22:38:40,800 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 [2024-10-13 22:38:40,872 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 [2024-10-13 22:38:40,942 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 [2024-10-13 22:38:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:41,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:48,894 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 463 treesize of output 449 [2024-10-13 22:38:49,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:38:49,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 15466641403321184 treesize of output 15352292194032480 [2024-10-13 22:38:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:38:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:51,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382569299] [2024-10-13 22:38:51,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:38:51,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246626591] [2024-10-13 22:38:51,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246626591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:51,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 22:38:51,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2024-10-13 22:38:51,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961999061] [2024-10-13 22:38:51,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:51,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-10-13 22:38:51,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-10-13 22:38:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=4606, Unknown=0, NotChecked=0, Total=4830 [2024-10-13 22:38:51,512 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 70 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:58,278 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2024-10-13 22:38:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-13 22:38:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 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 42 [2024-10-13 22:38:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:58,279 INFO L225 Difference]: With dead ends: 93 [2024-10-13 22:38:58,279 INFO L226 Difference]: Without dead ends: 78 [2024-10-13 22:38:58,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=313, Invalid=5693, Unknown=0, NotChecked=0, Total=6006 [2024-10-13 22:38:58,280 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:58,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-13 22:38:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-13 22:38:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2024-10-13 22:38:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 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) [2024-10-13 22:38:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2024-10-13 22:38:58,358 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 42 [2024-10-13 22:38:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:58,358 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2024-10-13 22:38:58,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-10-13 22:38:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 22:38:58,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:58,359 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:58,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 22:38:58,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:58,560 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:38:58,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:38:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1163744169, now seen corresponding path program 20 times [2024-10-13 22:38:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:38:58,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895347029] [2024-10-13 22:38:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:38:58,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:38:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:38:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:38:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:38:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895347029] [2024-10-13 22:38:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895347029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:38:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954935411] [2024-10-13 22:38:58,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:38:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:38:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:38:58,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:38:58,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 22:38:58,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:38:58,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:38:58,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 22:38:58,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:38:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:38:59,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:38:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:38:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954935411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:38:59,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:38:59,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-10-13 22:38:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167199200] [2024-10-13 22:38:59,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:38:59,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-13 22:38:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:38:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-13 22:38:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-10-13 22:38:59,328 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 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) [2024-10-13 22:38:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:38:59,707 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2024-10-13 22:38:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 22:38:59,707 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 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 43 [2024-10-13 22:38:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:38:59,708 INFO L225 Difference]: With dead ends: 119 [2024-10-13 22:38:59,708 INFO L226 Difference]: Without dead ends: 69 [2024-10-13 22:38:59,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 61 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-10-13 22:38:59,708 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:38:59,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:38:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-13 22:38:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2024-10-13 22:38:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:38:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-10-13 22:38:59,797 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 43 [2024-10-13 22:38:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:38:59,797 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-10-13 22:38:59,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 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) [2024-10-13 22:38:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-10-13 22:38:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 22:38:59,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:38:59,798 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:38:59,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 22:38:59,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 22:38:59,999 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:39:00,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:39:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash -390705374, now seen corresponding path program 21 times [2024-10-13 22:39:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:39:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91161834] [2024-10-13 22:39:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:39:00,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:39:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:39:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:39:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:39:00,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91161834] [2024-10-13 22:39:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91161834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:39:00,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90651901] [2024-10-13 22:39:00,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:39:00,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:39:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:39:00,287 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:39:00,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process