./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/mods.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/mods.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 f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:26:08,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:26:09,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:26:09,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:26:09,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:26:09,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:26:09,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:26:09,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:26:09,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:26:09,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:26:09,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:26:09,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:26:09,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:26:09,077 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:26:09,077 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:26:09,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:26:09,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:26:09,078 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:26:09,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:26:09,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:26:09,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:26:09,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:26:09,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:26:09,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:26:09,083 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:26:09,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:26:09,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:26:09,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:26:09,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:26:09,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:26:09,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:26:09,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:26:09,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:09,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:26:09,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:26:09,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:26:09,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:26:09,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:26:09,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:26:09,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:26:09,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:26:09,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:26:09,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba [2024-11-18 09:26:09,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:26:09,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:26:09,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:26:09,381 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:26:09,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:26:09,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/mods.c [2024-11-18 09:26:10,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:26:10,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:26:10,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/mods.c [2024-11-18 09:26:10,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55ed5b57/b27afd80759d432ba08e08eb22f6f977/FLAG2e582b240 [2024-11-18 09:26:11,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55ed5b57/b27afd80759d432ba08e08eb22f6f977 [2024-11-18 09:26:11,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:26:11,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:26:11,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:11,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:26:11,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:26:11,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1329594b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11, skipping insertion in model container [2024-11-18 09:26:11,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:26:11,543 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/mods.c[587,600] [2024-11-18 09:26:11,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:11,583 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:26:11,596 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/mods.c[587,600] [2024-11-18 09:26:11,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:11,630 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:26:11,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11 WrapperNode [2024-11-18 09:26:11,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:11,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:11,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:26:11,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:26:11,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,677 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2024-11-18 09:26:11,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:11,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:26:11,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:26:11,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:26:11,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,713 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 7, 5, 7]. 33 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 5 writes are split as follows [0, 0, 2, 3]. [2024-11-18 09:26:11,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:26:11,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:26:11,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:26:11,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:26:11,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (1/1) ... [2024-11-18 09:26:11,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:11,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:26:11,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:26:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:26:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:26:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:26:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:26:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:26:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:26:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:26:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:26:11,930 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:26:11,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:26:12,075 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-18 09:26:12,075 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:26:12,091 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:26:12,091 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 09:26:12,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:12 BoogieIcfgContainer [2024-11-18 09:26:12,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:26:12,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:26:12,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:26:12,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:26:12,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:26:11" (1/3) ... [2024-11-18 09:26:12,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767beb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:12, skipping insertion in model container [2024-11-18 09:26:12,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:11" (2/3) ... [2024-11-18 09:26:12,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767beb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:12, skipping insertion in model container [2024-11-18 09:26:12,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:12" (3/3) ... [2024-11-18 09:26:12,105 INFO L112 eAbstractionObserver]: Analyzing ICFG mods.c [2024-11-18 09:26:12,121 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:26:12,122 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:26:12,187 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:26:12,195 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;@7b6fecad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:26:12,196 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:26:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 09:26:12,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:12,206 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:12,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:12,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2024-11-18 09:26:12,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330960014] [2024-11-18 09:26:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330960014] [2024-11-18 09:26:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330960014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:12,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:12,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:26:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542223273] [2024-11-18 09:26:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:26:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:26:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:26:12,457 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:12,471 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2024-11-18 09:26:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:26:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-18 09:26:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:12,478 INFO L225 Difference]: With dead ends: 50 [2024-11-18 09:26:12,479 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 09:26:12,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:26:12,487 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:12,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 09:26:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 09:26:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2024-11-18 09:26:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-18 09:26:12,520 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-18 09:26:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:12,520 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-18 09:26:12,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-18 09:26:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 09:26:12,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:12,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:12,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:26:12,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:12,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2024-11-18 09:26:12,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:12,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051359654] [2024-11-18 09:26:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051359654] [2024-11-18 09:26:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051359654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:26:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76381730] [2024-11-18 09:26:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:12,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:26:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:12,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:26:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:12,704 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:12,788 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-18 09:26:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:26:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-18 09:26:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:12,790 INFO L225 Difference]: With dead ends: 53 [2024-11-18 09:26:12,790 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 09:26:12,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:12,793 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:12,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 09:26:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2024-11-18 09:26:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-18 09:26:12,800 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2024-11-18 09:26:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:12,800 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-18 09:26:12,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-18 09:26:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 09:26:12,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:12,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:12,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:26:12,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:12,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2024-11-18 09:26:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856460938] [2024-11-18 09:26:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 09:26:12,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139563392] [2024-11-18 09:26:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:12,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:12,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:12,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:26:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:13,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 09:26:13,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:13,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:13,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:13,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:13,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:13,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:13,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:14,108 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 42 treesize of output 38 [2024-11-18 09:26:14,112 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 51 treesize of output 47 [2024-11-18 09:26:14,128 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse2 (select (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (and .cse0 (= 0 (let ((.cse1 (+ .cse2 2))) (mod .cse1 .cse1)))) (and (not .cse0) (forall ((v_arrayElimCell_5 Int)) (= (mod (+ .cse2 (* 2 v_arrayElimCell_5)) (+ .cse2 v_arrayElimCell_5 1)) 0))))) is different from false [2024-11-18 09:26:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-18 09:26:14,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856460938] [2024-11-18 09:26:14,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 09:26:14,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139563392] [2024-11-18 09:26:14,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139563392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:14,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:26:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-18 09:26:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154085413] [2024-11-18 09:26:14,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:14,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 09:26:14,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 09:26:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=350, Unknown=1, NotChecked=38, Total=462 [2024-11-18 09:26:14,137 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:14,631 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2024-11-18 09:26:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:26:14,632 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 09:26:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:14,633 INFO L225 Difference]: With dead ends: 63 [2024-11-18 09:26:14,633 INFO L226 Difference]: Without dead ends: 61 [2024-11-18 09:26:14,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=583, Unknown=1, NotChecked=50, Total=756 [2024-11-18 09:26:14,635 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:14,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 176 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 252 Invalid, 0 Unknown, 60 Unchecked, 0.3s Time] [2024-11-18 09:26:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-18 09:26:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2024-11-18 09:26:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-18 09:26:14,645 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 24 [2024-11-18 09:26:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:14,646 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-18 09:26:14,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-18 09:26:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 09:26:14,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:14,648 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:14,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:26:14,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:14,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:14,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 775449632, now seen corresponding path program 2 times [2024-11-18 09:26:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442335928] [2024-11-18 09:26:14,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:14,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:14,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:26:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442335928] [2024-11-18 09:26:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442335928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374189393] [2024-11-18 09:26:15,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:15,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:15,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:15,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:26:15,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:15,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:15,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:26:15,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:26:15,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:26:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374189393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:15,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:26:15,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803990012] [2024-11-18 09:26:15,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:15,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:26:15,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:26:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:26:15,247 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:15,500 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2024-11-18 09:26:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:26:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 09:26:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:15,502 INFO L225 Difference]: With dead ends: 106 [2024-11-18 09:26:15,502 INFO L226 Difference]: Without dead ends: 80 [2024-11-18 09:26:15,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:26:15,504 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:15,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 73 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:26:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-18 09:26:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 55. [2024-11-18 09:26:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 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) [2024-11-18 09:26:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-18 09:26:15,521 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 26 [2024-11-18 09:26:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:15,521 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-18 09:26:15,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-18 09:26:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 09:26:15,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:15,524 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:15,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:26:15,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 09:26:15,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:15,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash -750104360, now seen corresponding path program 1 times [2024-11-18 09:26:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279807492] [2024-11-18 09:26:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:15,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:26:15,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279807492] [2024-11-18 09:26:15,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279807492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861498327] [2024-11-18 09:26:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:15,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:15,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:15,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:26:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:15,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:26:15,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:26:16,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:26:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861498327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:16,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:16,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:26:16,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878315364] [2024-11-18 09:26:16,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:16,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:26:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:26:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:26:16,072 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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) [2024-11-18 09:26:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:16,211 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2024-11-18 09:26:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:26:16,212 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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 28 [2024-11-18 09:26:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:16,213 INFO L225 Difference]: With dead ends: 101 [2024-11-18 09:26:16,213 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 09:26:16,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:26:16,214 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:16,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 51 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 09:26:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2024-11-18 09:26:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-18 09:26:16,225 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2024-11-18 09:26:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:16,225 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-18 09:26:16,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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) [2024-11-18 09:26:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-18 09:26:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 09:26:16,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:16,226 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:16,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:26:16,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:16,427 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:16,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 3 times [2024-11-18 09:26:16,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:16,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149355696] [2024-11-18 09:26:16,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:16,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:16,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:26:16,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 09:26:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200980333] [2024-11-18 09:26:16,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:16,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:16,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:16,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:16,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:26:16,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:26:16,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:16,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-18 09:26:16,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:16,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:16,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:16,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:26:16,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:16,867 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 [2024-11-18 09:26:16,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:16,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:17,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:17,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:17,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:17,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:17,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:17,225 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 30 treesize of output 14 [2024-11-18 09:26:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:17,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:18,558 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 102 treesize of output 94 [2024-11-18 09:26:18,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:18,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 501 treesize of output 453 [2024-11-18 09:26:18,711 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse2 (select (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (let ((.cse4 (= |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse0 (= (+ |c_ULTIMATE.start_main_~i~0#1| 1) 0)) (.cse5 (forall ((v_arrayElimCell_19 Int)) (= (mod (+ .cse2 (* 2 v_arrayElimCell_19) 1) (+ .cse2 2 v_arrayElimCell_19)) 0))) (.cse1 (forall ((v_arrayElimCell_18 Int)) (= (let ((.cse11 (+ .cse2 2 v_arrayElimCell_18))) (mod .cse11 .cse11)) 0))) (.cse6 (not .cse4))) (and (or (not .cse0) .cse1) (or (forall ((v_arrayElimCell_18 Int) (v_arrayElimCell_19 Int)) (or (= (mod (+ .cse2 (* 2 v_arrayElimCell_19) v_arrayElimCell_18) (+ .cse2 v_arrayElimCell_19 v_arrayElimCell_18 1)) 0) (= (let ((.cse3 (+ .cse2 2 v_arrayElimCell_18))) (mod .cse3 .cse3)) 0))) .cse4) (or (and (or .cse5 .cse6) (forall ((v_arrayElimCell_18 Int) (v_arrayElimCell_19 Int)) (let ((.cse7 (* 2 v_arrayElimCell_19))) (or (= (mod (+ .cse2 .cse7 v_arrayElimCell_18) (+ .cse2 v_arrayElimCell_19 v_arrayElimCell_18 1)) 0) (= (mod (+ .cse2 .cse7 1) (+ .cse2 2 v_arrayElimCell_19)) 0)))) (or (forall ((v_arrayElimCell_18 Int) (v_arrayElimCell_19 Int)) (= (mod (+ .cse2 (* 2 v_arrayElimCell_19) v_arrayElimCell_18) (+ .cse2 v_arrayElimCell_19 v_arrayElimCell_18 1)) 0)) .cse4)) .cse0) (not .cse8) (or .cse5 .cse1 .cse6) (forall ((v_arrayElimCell_18 Int)) (or (forall ((v_arrayElimCell_19 Int)) (let ((.cse9 (* 2 v_arrayElimCell_19))) (or (= (mod (+ .cse2 .cse9 v_arrayElimCell_18) (+ .cse2 v_arrayElimCell_19 v_arrayElimCell_18 1)) 0) (= (mod (+ .cse2 .cse9 1) (+ .cse2 2 v_arrayElimCell_19)) 0)))) (= (let ((.cse10 (+ .cse2 2 v_arrayElimCell_18))) (mod .cse10 .cse10)) 0)))))) (and .cse8 (= (let ((.cse12 (+ .cse2 3))) (mod .cse12 .cse12)) 0)))) is different from false [2024-11-18 09:26:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-18 09:26:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149355696] [2024-11-18 09:26:18,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 09:26:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200980333] [2024-11-18 09:26:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200980333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:18,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:26:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2024-11-18 09:26:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366751689] [2024-11-18 09:26:18,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:18,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 09:26:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 09:26:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1230, Unknown=1, NotChecked=72, Total=1482 [2024-11-18 09:26:18,722 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:23,296 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2024-11-18 09:26:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-18 09:26:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-18 09:26:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:23,297 INFO L225 Difference]: With dead ends: 104 [2024-11-18 09:26:23,297 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 09:26:23,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=359, Invalid=2506, Unknown=1, NotChecked=104, Total=2970 [2024-11-18 09:26:23,300 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 137 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:23,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 292 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 663 Invalid, 0 Unknown, 99 Unchecked, 0.9s Time] [2024-11-18 09:26:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 09:26:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 60. [2024-11-18 09:26:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 59 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) [2024-11-18 09:26:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2024-11-18 09:26:23,312 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 32 [2024-11-18 09:26:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:23,312 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2024-11-18 09:26:23,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2024-11-18 09:26:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 09:26:23,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:23,313 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:23,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:23,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:23,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:23,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash 332676504, now seen corresponding path program 4 times [2024-11-18 09:26:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661992956] [2024-11-18 09:26:23,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:23,535 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:23,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 09:26:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661992956] [2024-11-18 09:26:23,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661992956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287533367] [2024-11-18 09:26:23,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:23,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:23,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:26:23,697 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:23,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:23,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:26:23,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 09:26:23,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 09:26:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287533367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:23,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-18 09:26:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793029333] [2024-11-18 09:26:23,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:23,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:26:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:26:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:26:23,804 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:24,064 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2024-11-18 09:26:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:26:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 09:26:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:24,065 INFO L225 Difference]: With dead ends: 145 [2024-11-18 09:26:24,065 INFO L226 Difference]: Without dead ends: 107 [2024-11-18 09:26:24,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:26:24,067 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:24,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 114 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:26:24,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-18 09:26:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 64. [2024-11-18 09:26:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-11-18 09:26:24,076 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 34 [2024-11-18 09:26:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:24,077 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-11-18 09:26:24,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-11-18 09:26:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:26:24,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:24,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:24,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:26:24,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:24,283 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:24,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1737020496, now seen corresponding path program 2 times [2024-11-18 09:26:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:24,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47507096] [2024-11-18 09:26:24,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:24,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:24,345 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:24,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47507096] [2024-11-18 09:26:26,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47507096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403040014] [2024-11-18 09:26:26,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:26,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:26,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:26,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:26:26,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:26,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:26,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-18 09:26:26,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:26,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:26,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:27,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:26:27,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:27,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:27,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:27,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:27,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:27,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:27,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:27,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:27,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:27,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:26:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:27,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:30,062 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 206 treesize of output 190 [2024-11-18 09:26:30,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:30,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1018 treesize of output 922 [2024-11-18 09:26:30,228 WARN L851 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (let ((.cse1 (select (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (= (+ |c_ULTIMATE.start_main_~i~0#1| 1) 0))) (and (or (not .cse0) (forall ((v_arrayElimCell_32 Int)) (let ((.cse2 (+ .cse1 2 v_arrayElimCell_32))) (or (= (mod (+ (* 2 v_arrayElimCell_32) .cse1 1) .cse2) 0) (not (= (mod .cse2 .cse2) 0)))))) (or (let ((.cse4 (= |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse6 (not .cse4))) (and (or (forall ((v_arrayElimCell_32 Int) (v_arrayElimCell_33 Int)) (let ((.cse3 (+ .cse1 v_arrayElimCell_33 v_arrayElimCell_32 1))) (or (not (= (mod (+ .cse1 (* 2 v_arrayElimCell_33) v_arrayElimCell_32) .cse3) 0)) (= (mod (+ (* 2 v_arrayElimCell_32) .cse1 v_arrayElimCell_33) .cse3) 0)))) .cse4) (or (forall ((v_arrayElimCell_33 Int)) (let ((.cse5 (+ .cse1 2 v_arrayElimCell_33))) (or (not (= (mod (+ .cse1 (* 2 v_arrayElimCell_33) 1) .cse5) 0)) (= 0 (mod .cse5 .cse5))))) .cse6) (or (forall ((v_arrayElimCell_32 Int) (v_arrayElimCell_33 Int)) (let ((.cse7 (+ .cse1 2 v_arrayElimCell_33))) (or (not (= (mod (+ .cse1 (* 2 v_arrayElimCell_33) 1) .cse7) 0)) (= 0 (mod .cse7 .cse7)) (= (mod (+ (* 2 v_arrayElimCell_32) .cse1 v_arrayElimCell_33) (+ .cse1 v_arrayElimCell_33 v_arrayElimCell_32 1)) 0)))) .cse6)))) .cse0)))) is different from false [2024-11-18 09:26:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-18 09:26:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403040014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:30,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 22, 23] total 67 [2024-11-18 09:26:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956805851] [2024-11-18 09:26:30,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:30,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-18 09:26:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-18 09:26:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=3841, Unknown=1, NotChecked=128, Total=4422 [2024-11-18 09:26:30,286 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 67 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)