./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_original_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_partition_original_ground.i -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 7c423fd522e95226e38270ab4d82928946afe4ab8940cfd611684a61e552aff6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:37:28,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:37:28,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:37:28,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:37:28,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:37:28,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:37:28,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:37:28,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:37:28,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:37:28,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:37:28,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:37:28,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:37:28,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:37:28,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:37:28,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:37:28,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:37:28,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:37:28,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:37:28,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:37:28,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:37:28,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:37:28,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:37:28,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:37:28,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:37:28,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:37:28,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:37:28,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:37:28,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:37:28,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:37:28,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:37:28,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:37:28,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:37:28,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:37:28,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:37:28,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:37:28,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:37:28,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:37:28,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:37:28,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:37:28,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:37:28,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:37:28,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:37:28,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c423fd522e95226e38270ab4d82928946afe4ab8940cfd611684a61e552aff6 [2024-11-21 20:37:28,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:37:28,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:37:28,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:37:28,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:37:28,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:37:28,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_original_ground.i [2024-11-21 20:37:29,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:37:30,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:37:30,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_original_ground.i [2024-11-21 20:37:30,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a965dfc/50fe34337d5f4290a3816941fc88673d/FLAG98435cee7 [2024-11-21 20:37:30,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a965dfc/50fe34337d5f4290a3816941fc88673d [2024-11-21 20:37:30,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:37:30,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:37:30,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:37:30,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:37:30,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:37:30,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bac727a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30, skipping insertion in model container [2024-11-21 20:37:30,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:37:30,652 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-examples/standard_partition_original_ground.i[827,840] [2024-11-21 20:37:30,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:37:30,679 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:37:30,689 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-examples/standard_partition_original_ground.i[827,840] [2024-11-21 20:37:30,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:37:30,714 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:37:30,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30 WrapperNode [2024-11-21 20:37:30,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:37:30,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:37:30,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:37:30,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:37:30,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,743 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2024-11-21 20:37:30,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:37:30,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:37:30,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:37:30,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:37:30,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,767 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 4, 2]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-21 20:37:30,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:37:30,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:37:30,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:37:30,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:37:30,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:37:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:30,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 20:37:30,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 20:37:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:37:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:37:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:37:30,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:37:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 20:37:30,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-21 20:37:30,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-21 20:37:30,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:37:30,914 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:37:30,916 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:37:31,064 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-21 20:37:31,064 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:37:31,074 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:37:31,075 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-21 20:37:31,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:31 BoogieIcfgContainer [2024-11-21 20:37:31,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:37:31,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:37:31,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:37:31,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:37:31,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:37:30" (1/3) ... [2024-11-21 20:37:31,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9779b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:31, skipping insertion in model container [2024-11-21 20:37:31,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (2/3) ... [2024-11-21 20:37:31,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9779b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:31, skipping insertion in model container [2024-11-21 20:37:31,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:31" (3/3) ... [2024-11-21 20:37:31,084 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_original_ground.i [2024-11-21 20:37:31,097 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:37:31,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:37:31,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:37:31,146 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;@7c80f71b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:37:31,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:37:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-21 20:37:31,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,156 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1460666166, now seen corresponding path program 1 times [2024-11-21 20:37:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757964245] [2024-11-21 20:37:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:37:31,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:31,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757964245] [2024-11-21 20:37:31,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757964245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:31,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:37:31,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:37:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725004962] [2024-11-21 20:37:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:31,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:31,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:31,408 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,441 INFO L93 Difference]: Finished difference Result 54 states and 76 transitions. [2024-11-21 20:37:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-21 20:37:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,448 INFO L225 Difference]: With dead ends: 54 [2024-11-21 20:37:31,448 INFO L226 Difference]: Without dead ends: 26 [2024-11-21 20:37:31,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:31,453 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-21 20:37:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-21 20:37:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-21 20:37:31,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2024-11-21 20:37:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,493 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-21 20:37:31,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-21 20:37:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-21 20:37:31,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,494 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:37:31,495 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1451772201, now seen corresponding path program 1 times [2024-11-21 20:37:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808416454] [2024-11-21 20:37:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808416454] [2024-11-21 20:37:31,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808416454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:31,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:37:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:37:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340876511] [2024-11-21 20:37:31,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:31,606 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,631 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-21 20:37:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-21 20:37:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,632 INFO L225 Difference]: With dead ends: 44 [2024-11-21 20:37:31,632 INFO L226 Difference]: Without dead ends: 28 [2024-11-21 20:37:31,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:31,634 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-21 20:37:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-21 20:37:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-21 20:37:31,642 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2024-11-21 20:37:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,645 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-21 20:37:31,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-21 20:37:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-21 20:37:31,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,646 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 20:37:31,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1601853018, now seen corresponding path program 1 times [2024-11-21 20:37:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066701314] [2024-11-21 20:37:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:31,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066701314] [2024-11-21 20:37:31,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066701314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:31,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193005970] [2024-11-21 20:37:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:31,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:31,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:37:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:37:31,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193005970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:31,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:31,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:37:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318658330] [2024-11-21 20:37:31,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:37:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:37:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:31,858 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,881 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-21 20:37:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:37:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-21 20:37:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,882 INFO L225 Difference]: With dead ends: 53 [2024-11-21 20:37:31,882 INFO L226 Difference]: Without dead ends: 32 [2024-11-21 20:37:31,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:31,883 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-21 20:37:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-21 20:37:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-21 20:37:31,888 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 16 [2024-11-21 20:37:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,889 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-21 20:37:31,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-21 20:37:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-21 20:37:31,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,890 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:37:32,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:32,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash 729568044, now seen corresponding path program 2 times [2024-11-21 20:37:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:32,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166293460] [2024-11-21 20:37:32,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:32,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:32,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:37:32,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:32,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166293460] [2024-11-21 20:37:32,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166293460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:32,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973006374] [2024-11-21 20:37:32,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:32,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:32,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:37:32,268 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:32,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:37:32,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:32,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973006374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:32,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:32,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:37:32,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945617585] [2024-11-21 20:37:32,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:32,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:37:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:37:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:37:32,429 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:32,589 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-21 20:37:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 20:37:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-21 20:37:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:32,591 INFO L225 Difference]: With dead ends: 70 [2024-11-21 20:37:32,591 INFO L226 Difference]: Without dead ends: 49 [2024-11-21 20:37:32,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-21 20:37:32,592 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:32,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 142 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-21 20:37:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-11-21 20:37:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-21 20:37:32,604 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2024-11-21 20:37:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:32,605 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-21 20:37:32,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-21 20:37:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-21 20:37:32,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:32,606 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:32,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:37:32,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-21 20:37:32,811 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:32,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -945568841, now seen corresponding path program 3 times [2024-11-21 20:37:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487410126] [2024-11-21 20:37:32,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:32,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:32,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487410126] [2024-11-21 20:37:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487410126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985219750] [2024-11-21 20:37:32,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:32,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:32,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:32,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:37:32,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:32,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:37:32,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:32,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985219750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:33,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:33,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-21 20:37:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224192463] [2024-11-21 20:37:33,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:33,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-21 20:37:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-21 20:37:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:37:33,037 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:33,070 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-11-21 20:37:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 20:37:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-21 20:37:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:33,071 INFO L225 Difference]: With dead ends: 75 [2024-11-21 20:37:33,071 INFO L226 Difference]: Without dead ends: 59 [2024-11-21 20:37:33,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:37:33,072 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:33,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-21 20:37:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-21 20:37:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-21 20:37:33,077 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 37 [2024-11-21 20:37:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:33,077 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-21 20:37:33,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-21 20:37:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-21 20:37:33,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:33,079 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:33,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:33,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:33,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:33,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -76391305, now seen corresponding path program 4 times [2024-11-21 20:37:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591486371] [2024-11-21 20:37:33,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:33,318 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:33,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:33,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591486371] [2024-11-21 20:37:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591486371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871354091] [2024-11-21 20:37:33,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:33,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:33,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:33,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:33,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:37:33,575 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:33,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:33,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:37:33,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-21 20:37:33,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-21 20:37:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871354091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:33,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:33,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-11-21 20:37:33,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260987573] [2024-11-21 20:37:33,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:33,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-21 20:37:33,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-21 20:37:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2024-11-21 20:37:33,977 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:34,377 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2024-11-21 20:37:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-21 20:37:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-21 20:37:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:34,381 INFO L225 Difference]: With dead ends: 124 [2024-11-21 20:37:34,381 INFO L226 Difference]: Without dead ends: 88 [2024-11-21 20:37:34,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=993, Invalid=1763, Unknown=0, NotChecked=0, Total=2756 [2024-11-21 20:37:34,383 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:34,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 142 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-21 20:37:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-11-21 20:37:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2024-11-21 20:37:34,391 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 49 [2024-11-21 20:37:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:34,392 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2024-11-21 20:37:34,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2024-11-21 20:37:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-21 20:37:34,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:34,393 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:34,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:34,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:34,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:34,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash -823248208, now seen corresponding path program 5 times [2024-11-21 20:37:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:34,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222773319] [2024-11-21 20:37:34,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:34,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:34,685 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-21 20:37:34,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222773319] [2024-11-21 20:37:34,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222773319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166133494] [2024-11-21 20:37:34,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:34,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:34,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:34,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:34,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:37:41,703 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-21 20:37:41,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:41,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-21 20:37:41,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:41,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:41,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166133494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:41,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:41,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-21 20:37:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610604469] [2024-11-21 20:37:41,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:41,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 20:37:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 20:37:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:37:41,934 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:42,002 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2024-11-21 20:37:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-21 20:37:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-21 20:37:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:42,004 INFO L225 Difference]: With dead ends: 129 [2024-11-21 20:37:42,004 INFO L226 Difference]: Without dead ends: 113 [2024-11-21 20:37:42,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:37:42,005 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:42,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 82 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-21 20:37:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-21 20:37:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.18348623853211) internal successors, (129), 109 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2024-11-21 20:37:42,018 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 76 [2024-11-21 20:37:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:42,019 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2024-11-21 20:37:42,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2024-11-21 20:37:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-21 20:37:42,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:42,020 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:42,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:37:42,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:42,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:42,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash -220008385, now seen corresponding path program 6 times [2024-11-21 20:37:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91861116] [2024-11-21 20:37:42,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:37:42,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:42,423 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-21 20:37:42,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91861116] [2024-11-21 20:37:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91861116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712597154] [2024-11-21 20:37:42,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:37:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:42,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:42,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:42,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:37:54,363 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-21 20:37:54,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:54,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-21 20:37:54,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:54,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-21 20:37:55,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712597154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:55,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:55,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 27] total 51 [2024-11-21 20:37:55,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545253602] [2024-11-21 20:37:55,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:55,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-21 20:37:55,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-21 20:37:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 20:37:55,140 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:56,068 INFO L93 Difference]: Finished difference Result 227 states and 290 transitions. [2024-11-21 20:37:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-21 20:37:56,068 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-21 20:37:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:56,069 INFO L225 Difference]: With dead ends: 227 [2024-11-21 20:37:56,069 INFO L226 Difference]: Without dead ends: 161 [2024-11-21 20:37:56,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3482, Invalid=5830, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:37:56,073 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 199 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:56,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 122 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-21 20:37:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-21 20:37:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.127388535031847) internal successors, (177), 157 states have internal predecessors, (177), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:37:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 181 transitions. [2024-11-21 20:37:56,085 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 181 transitions. Word has length 103 [2024-11-21 20:37:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:56,085 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 181 transitions. [2024-11-21 20:37:56,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 181 transitions. [2024-11-21 20:37:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 20:37:56,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:56,087 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:56,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:56,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:56,287 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:56,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1434045455, now seen corresponding path program 7 times [2024-11-21 20:37:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951047440] [2024-11-21 20:37:56,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:37:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951047440] [2024-11-21 20:37:58,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951047440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174139694] [2024-11-21 20:37:58,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:37:58,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:58,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:58,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:37:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:58,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:37:58,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:58,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:38:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:38:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174139694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:38:00,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:38:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-21 20:38:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236023788] [2024-11-21 20:38:00,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:38:00,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-21 20:38:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:38:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-21 20:38:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:38:00,574 INFO L87 Difference]: Start difference. First operand 161 states and 181 transitions. Second operand has 97 states, 97 states have (on average 2.082474226804124) internal successors, (202), 97 states have internal predecessors, (202), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:38:00,784 INFO L93 Difference]: Finished difference Result 323 states and 410 transitions. [2024-11-21 20:38:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 20:38:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.082474226804124) internal successors, (202), 97 states have internal predecessors, (202), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-11-21 20:38:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:38:00,788 INFO L225 Difference]: With dead ends: 323 [2024-11-21 20:38:00,788 INFO L226 Difference]: Without dead ends: 257 [2024-11-21 20:38:00,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:38:00,794 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:38:00,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:38:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-21 20:38:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-21 20:38:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.0790513833992095) internal successors, (273), 253 states have internal predecessors, (273), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:38:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 277 transitions. [2024-11-21 20:38:00,818 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 277 transitions. Word has length 151 [2024-11-21 20:38:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:38:00,819 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 277 transitions. [2024-11-21 20:38:00,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.082474226804124) internal successors, (202), 97 states have internal predecessors, (202), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 277 transitions. [2024-11-21 20:38:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-21 20:38:00,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:38:00,823 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:38:00,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 20:38:01,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:38:01,024 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:38:01,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:38:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1551309905, now seen corresponding path program 8 times [2024-11-21 20:38:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:38:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776319603] [2024-11-21 20:38:01,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:38:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:38:01,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:38:01,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:38:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:38:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776319603] [2024-11-21 20:38:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776319603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:38:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844494139] [2024-11-21 20:38:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:38:06,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:38:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:38:06,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:38:06,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:38:06,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:38:06,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:06,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-21 20:38:06,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:38:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:38:06,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:38:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:38:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844494139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:38:15,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:38:15,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-21 20:38:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591360410] [2024-11-21 20:38:15,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:38:15,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-21 20:38:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:38:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-21 20:38:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:38:15,579 INFO L87 Difference]: Start difference. First operand 257 states and 277 transitions. Second operand has 193 states, 193 states have (on average 2.0414507772020727) internal successors, (394), 193 states have internal predecessors, (394), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:38:16,153 INFO L93 Difference]: Finished difference Result 515 states and 650 transitions. [2024-11-21 20:38:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-21 20:38:16,154 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.0414507772020727) internal successors, (394), 193 states have internal predecessors, (394), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-11-21 20:38:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:38:16,156 INFO L225 Difference]: With dead ends: 515 [2024-11-21 20:38:16,156 INFO L226 Difference]: Without dead ends: 449 [2024-11-21 20:38:16,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:38:16,160 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:38:16,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 219 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:38:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-21 20:38:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2024-11-21 20:38:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 445 states have (on average 1.0449438202247192) internal successors, (465), 445 states have internal predecessors, (465), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:38:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 469 transitions. [2024-11-21 20:38:16,183 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 469 transitions. Word has length 247 [2024-11-21 20:38:16,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:38:16,184 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 469 transitions. [2024-11-21 20:38:16,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.0414507772020727) internal successors, (394), 193 states have internal predecessors, (394), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 469 transitions. [2024-11-21 20:38:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-21 20:38:16,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:38:16,192 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:38:16,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 20:38:16,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:38:16,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:38:16,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:38:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash -970157329, now seen corresponding path program 9 times [2024-11-21 20:38:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:38:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669938064] [2024-11-21 20:38:16,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:38:16,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:38:16,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 20:38:16,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:38:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:38:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669938064] [2024-11-21 20:38:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669938064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:38:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486000061] [2024-11-21 20:38:16,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:38:16,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:38:16,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:38:16,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:38:16,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:38:20,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 20:38:20,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:20,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-21 20:38:20,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:38:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:38:20,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:38:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:38:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486000061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:38:21,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:38:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-21 20:38:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813348512] [2024-11-21 20:38:21,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:38:21,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-21 20:38:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:38:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-21 20:38:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:38:21,370 INFO L87 Difference]: Start difference. First operand 449 states and 469 transitions. Second operand has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:38:21,504 INFO L93 Difference]: Finished difference Result 519 states and 577 transitions. [2024-11-21 20:38:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-21 20:38:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-11-21 20:38:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:38:21,506 INFO L225 Difference]: With dead ends: 519 [2024-11-21 20:38:21,506 INFO L226 Difference]: Without dead ends: 503 [2024-11-21 20:38:21,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:38:21,507 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:38:21,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 139 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:38:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-21 20:38:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2024-11-21 20:38:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 499 states have (on average 1.0761523046092185) internal successors, (537), 499 states have internal predecessors, (537), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-21 20:38:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 541 transitions. [2024-11-21 20:38:21,519 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 541 transitions. Word has length 439 [2024-11-21 20:38:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:38:21,519 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 541 transitions. [2024-11-21 20:38:21,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:38:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 541 transitions. [2024-11-21 20:38:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-11-21 20:38:21,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:38:21,524 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:38:21,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 20:38:21,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:38:21,725 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:38:21,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:38:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -885683121, now seen corresponding path program 10 times [2024-11-21 20:38:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:38:21,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767104692] [2024-11-21 20:38:21,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:38:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:38:21,900 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:38:21,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 37817 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2024-11-21 20:38:39,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:38:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767104692] [2024-11-21 20:38:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767104692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:38:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296701874] [2024-11-21 20:38:39,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:38:39,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:38:39,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:38:39,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:38:39,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:38:40,248 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:38:40,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:38:40,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-21 20:38:40,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:38:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37817 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2024-11-21 20:38:40,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:39:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 37817 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2024-11-21 20:39:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296701874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:39:09,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:39:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 384 [2024-11-21 20:39:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196735451] [2024-11-21 20:39:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:39:09,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-11-21 20:39:09,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:39:09,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-11-21 20:39:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2024-11-21 20:39:09,366 INFO L87 Difference]: Start difference. First operand 503 states and 541 transitions. Second operand has 384 states, 384 states have (on average 2.0182291666666665) internal successors, (775), 384 states have internal predecessors, (775), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)