./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_compareModified_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_compareModified_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 ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:49:30,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:49:30,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:49:30,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:49:30,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:49:30,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:49:30,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:49:30,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:49:30,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:49:30,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:49:30,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:49:30,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:49:30,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:49:30,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:49:30,701 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:49:30,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:49:30,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:49:30,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:49:30,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:49:30,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:49:30,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:49:30,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:49:30,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:49:30,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:49:30,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:49:30,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:49:30,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:49:30,706 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:49:30,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:49:30,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:49:30,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:49:30,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:49:30,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:30,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:49:30,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:49:30,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:49:30,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:49:30,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:49:30,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:49:30,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:49:30,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:49:30,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:49:30,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e [2024-11-18 08:49:30,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:49:31,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:49:31,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:49:31,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:49:31,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:49:31,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2024-11-18 08:49:32,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:49:32,626 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:49:32,626 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2024-11-18 08:49:32,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f7854f9/2f74b4424d174e96b17615ebe2c4b538/FLAG2d8d2b8eb [2024-11-18 08:49:32,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f7854f9/2f74b4424d174e96b17615ebe2c4b538 [2024-11-18 08:49:32,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:49:32,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:49:32,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:32,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:49:32,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:49:32,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be1a88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32, skipping insertion in model container [2024-11-18 08:49:32,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:49:32,849 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_compareModified_ground.i[824,837] [2024-11-18 08:49:32,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:32,882 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:49:32,894 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_compareModified_ground.i[824,837] [2024-11-18 08:49:32,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:32,934 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:49:32,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32 WrapperNode [2024-11-18 08:49:32,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:32,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:32,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:49:32,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:49:32,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,983 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2024-11-18 08:49:32,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:32,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:49:32,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:49:32,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:49:32,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,017 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 3, 2, 5]. 42 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]. [2024-11-18 08:49:33,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:49:33,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:49:33,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:49:33,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:49:33,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:33,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:33,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:33,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 08:49:33,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:49:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:49:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:49:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:49:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 08:49:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 08:49:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 08:49:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:49:33,197 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:49:33,199 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:49:33,351 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 08:49:33,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:49:33,369 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:49:33,370 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 08:49:33,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:33 BoogieIcfgContainer [2024-11-18 08:49:33,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:49:33,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:49:33,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:49:33,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:49:33,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:32" (1/3) ... [2024-11-18 08:49:33,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d257367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:33, skipping insertion in model container [2024-11-18 08:49:33,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (2/3) ... [2024-11-18 08:49:33,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d257367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:33, skipping insertion in model container [2024-11-18 08:49:33,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:33" (3/3) ... [2024-11-18 08:49:33,379 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2024-11-18 08:49:33,396 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:49:33,396 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:49:33,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:49:33,455 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;@658d5e81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:49:33,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:49:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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) [2024-11-18 08:49:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 08:49:33,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:33,467 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:33,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:33,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2139872084, now seen corresponding path program 1 times [2024-11-18 08:49:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457578907] [2024-11-18 08:49:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457578907] [2024-11-18 08:49:33,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457578907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:33,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:33,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:49:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155500633] [2024-11-18 08:49:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:33,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:33,841 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-18 08:49:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:33,895 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2024-11-18 08:49:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2024-11-18 08:49:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:33,904 INFO L225 Difference]: With dead ends: 56 [2024-11-18 08:49:33,905 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 08:49:33,908 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 [2024-11-18 08:49:33,912 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 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 [2024-11-18 08:49:33,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 08:49:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-18 08:49:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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) [2024-11-18 08:49:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-18 08:49:33,955 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2024-11-18 08:49:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:33,956 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-18 08:49:33,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-18 08:49:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-18 08:49:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 08:49:33,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:33,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:33,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:49:33,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:33,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1879382297, now seen corresponding path program 1 times [2024-11-18 08:49:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037047942] [2024-11-18 08:49:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037047942] [2024-11-18 08:49:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037047942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:49:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392839111] [2024-11-18 08:49:34,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:34,104 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-18 08:49:34,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:34,128 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-18 08:49:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:34,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 14 [2024-11-18 08:49:34,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:34,130 INFO L225 Difference]: With dead ends: 46 [2024-11-18 08:49:34,130 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 08:49:34,130 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 [2024-11-18 08:49:34,132 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:34,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 08:49:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 08:49:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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) [2024-11-18 08:49:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-18 08:49:34,144 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 14 [2024-11-18 08:49:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:34,145 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-18 08:49:34,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-18 08:49:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-18 08:49:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 08:49:34,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:34,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:34,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 08:49:34,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:34,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1706281020, now seen corresponding path program 1 times [2024-11-18 08:49:34,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:34,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741083287] [2024-11-18 08:49:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:34,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741083287] [2024-11-18 08:49:34,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741083287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998467802] [2024-11-18 08:49:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:34,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:34,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:34,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:49:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:34,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:49:34,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 08:49:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998467802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 08:49:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 08:49:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359529862] [2024-11-18 08:49:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:49:34,421 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-18 08:49:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:34,440 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2024-11-18 08:49:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17 [2024-11-18 08:49:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:34,442 INFO L225 Difference]: With dead ends: 47 [2024-11-18 08:49:34,442 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 08:49:34,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:49:34,444 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:34,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 08:49:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-18 08:49:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2024-11-18 08:49:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-18 08:49:34,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2024-11-18 08:49:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:34,452 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-18 08:49:34,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-18 08:49:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-18 08:49:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 08:49:34,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:34,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:34,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 08:49:34,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:34,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1313254010, now seen corresponding path program 1 times [2024-11-18 08:49:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924422574] [2024-11-18 08:49:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924422574] [2024-11-18 08:49:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924422574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091611002] [2024-11-18 08:49:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:34,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:34,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:34,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:49:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:34,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:49:34,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091611002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:34,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:49:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691575544] [2024-11-18 08:49:34,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:49:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:49:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:34,913 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-18 08:49:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:34,961 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-18 08:49:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:49:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 17 [2024-11-18 08:49:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:34,963 INFO L225 Difference]: With dead ends: 65 [2024-11-18 08:49:34,964 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 08:49:34,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:34,965 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:34,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 08:49:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-18 08:49:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2024-11-18 08:49:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-18 08:49:34,978 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 17 [2024-11-18 08:49:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:34,978 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-18 08:49:34,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-18 08:49:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-18 08:49:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 08:49:34,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:34,980 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:34,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 08:49:35,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 08:49:35,185 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:35,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash 572862900, now seen corresponding path program 2 times [2024-11-18 08:49:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:35,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988695019] [2024-11-18 08:49:35,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:35,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:35,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 08:49:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988695019] [2024-11-18 08:49:35,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988695019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286019110] [2024-11-18 08:49:35,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:35,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:35,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:35,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:35,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:49:35,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:35,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:35,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:49:35,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:35,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286019110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:35,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 08:49:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268376999] [2024-11-18 08:49:35,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:35,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 08:49:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 08:49:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:49:35,573 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2024-11-18 08:49:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:35,753 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-18 08:49:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 08:49:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 23 [2024-11-18 08:49:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:35,756 INFO L225 Difference]: With dead ends: 86 [2024-11-18 08:49:35,756 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 08:49:35,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-18 08:49:35,758 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:35,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 148 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 08:49:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-18 08:49:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 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) [2024-11-18 08:49:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-18 08:49:35,771 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 23 [2024-11-18 08:49:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:35,771 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-18 08:49:35,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2024-11-18 08:49:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-18 08:49:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 08:49:35,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:35,773 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:35,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:35,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:35,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:35,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash -403578997, now seen corresponding path program 3 times [2024-11-18 08:49:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139817922] [2024-11-18 08:49:35,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:36,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:49:36,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 08:49:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:36,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139817922] [2024-11-18 08:49:36,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139817922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:36,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86527943] [2024-11-18 08:49:36,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:36,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:36,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:36,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:36,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:49:36,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:49:36,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:36,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 08:49:36,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:49:36,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:49:36,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86527943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:36,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2024-11-18 08:49:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437730747] [2024-11-18 08:49:36,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:36,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 08:49:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 08:49:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-18 08:49:36,749 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:36,985 INFO L93 Difference]: Finished difference Result 131 states and 172 transitions. [2024-11-18 08:49:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 08:49:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-18 08:49:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:36,989 INFO L225 Difference]: With dead ends: 131 [2024-11-18 08:49:36,989 INFO L226 Difference]: Without dead ends: 112 [2024-11-18 08:49:36,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-11-18 08:49:36,990 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:36,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 273 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-18 08:49:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2024-11-18 08:49:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 80 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:49:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2024-11-18 08:49:37,007 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 38 [2024-11-18 08:49:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:37,008 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2024-11-18 08:49:37,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2024-11-18 08:49:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 08:49:37,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:37,009 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:37,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 08:49:37,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:37,210 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:37,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash 941719817, now seen corresponding path program 1 times [2024-11-18 08:49:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626699073] [2024-11-18 08:49:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:37,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:37,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626699073] [2024-11-18 08:49:37,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626699073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:37,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770286834] [2024-11-18 08:49:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:37,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:37,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:37,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:37,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:49:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:37,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:49:37,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:37,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:37,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770286834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:37,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:37,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:49:37,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951207720] [2024-11-18 08:49:37,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:37,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:49:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:49:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:49:37,928 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 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) [2024-11-18 08:49:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:38,005 INFO L93 Difference]: Finished difference Result 171 states and 216 transitions. [2024-11-18 08:49:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:49:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 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 51 [2024-11-18 08:49:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:38,009 INFO L225 Difference]: With dead ends: 171 [2024-11-18 08:49:38,009 INFO L226 Difference]: Without dead ends: 109 [2024-11-18 08:49:38,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:49:38,010 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:38,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:38,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-18 08:49:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-18 08:49:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 104 states have internal predecessors, (120), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:49:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2024-11-18 08:49:38,027 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 51 [2024-11-18 08:49:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:38,028 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2024-11-18 08:49:38,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 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) [2024-11-18 08:49:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2024-11-18 08:49:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 08:49:38,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:38,032 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:38,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:49:38,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:38,233 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:38,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1702154511, now seen corresponding path program 2 times [2024-11-18 08:49:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732859777] [2024-11-18 08:49:38,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:38,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:38,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:38,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732859777] [2024-11-18 08:49:38,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732859777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:38,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057019643] [2024-11-18 08:49:38,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:38,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:38,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:38,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:49:39,158 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:39,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:39,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:49:39,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:39,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 08:49:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057019643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:40,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:49:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223785520] [2024-11-18 08:49:40,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:40,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:49:40,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:49:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:49:40,054 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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) [2024-11-18 08:49:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:40,206 INFO L93 Difference]: Finished difference Result 219 states and 276 transitions. [2024-11-18 08:49:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:49:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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 75 [2024-11-18 08:49:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:40,208 INFO L225 Difference]: With dead ends: 219 [2024-11-18 08:49:40,208 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 08:49:40,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:49:40,210 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:40,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 185 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 08:49:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-18 08:49:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.1125827814569536) internal successors, (168), 152 states have internal predecessors, (168), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:49:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 174 transitions. [2024-11-18 08:49:40,234 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 174 transitions. Word has length 75 [2024-11-18 08:49:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:40,235 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 174 transitions. [2024-11-18 08:49:40,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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) [2024-11-18 08:49:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 174 transitions. [2024-11-18 08:49:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 08:49:40,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:40,239 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:40,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 08:49:40,445 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 [2024-11-18 08:49:40,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:40,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 536011457, now seen corresponding path program 3 times [2024-11-18 08:49:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2242524] [2024-11-18 08:49:40,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:40,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:40,546 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 08:49:40,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-18 08:49:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2242524] [2024-11-18 08:49:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2242524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683873456] [2024-11-18 08:49:40,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:40,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:40,701 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) [2024-11-18 08:49:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 08:49:40,963 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 08:49:40,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:40,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 08:49:40,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-18 08:49:41,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-18 08:49:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683873456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:41,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:41,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-18 08:49:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727147790] [2024-11-18 08:49:41,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:41,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 08:49:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 08:49:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-18 08:49:41,312 INFO L87 Difference]: Start difference. First operand 157 states and 174 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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) [2024-11-18 08:49:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:41,363 INFO L93 Difference]: Finished difference Result 230 states and 282 transitions. [2024-11-18 08:49:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 08:49:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 123 [2024-11-18 08:49:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:41,368 INFO L225 Difference]: With dead ends: 230 [2024-11-18 08:49:41,368 INFO L226 Difference]: Without dead ends: 205 [2024-11-18 08:49:41,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-18 08:49:41,369 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:41,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 118 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-18 08:49:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-18 08:49:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 200 states have internal predecessors, (232), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:49:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2024-11-18 08:49:41,392 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 123 [2024-11-18 08:49:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:41,395 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2024-11-18 08:49:41,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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) [2024-11-18 08:49:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2024-11-18 08:49:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 08:49:41,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:41,397 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:41,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:41,597 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 [2024-11-18 08:49:41,598 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2027465793, now seen corresponding path program 4 times [2024-11-18 08:49:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082577476] [2024-11-18 08:49:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:41,694 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:41,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2403 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-18 08:49:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082577476] [2024-11-18 08:49:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082577476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801599034] [2024-11-18 08:49:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:43,853 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) [2024-11-18 08:49:43,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 08:49:44,225 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:44,225 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:44,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:49:44,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2403 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-18 08:49:44,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2403 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-18 08:49:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801599034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:46,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-18 08:49:46,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760689736] [2024-11-18 08:49:46,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-18 08:49:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-18 08:49:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 08:49:46,724 INFO L87 Difference]: Start difference. First operand 205 states and 238 transitions. Second operand has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 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) [2024-11-18 08:49:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:46,996 INFO L93 Difference]: Finished difference Result 411 states and 524 transitions. [2024-11-18 08:49:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:49:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 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 147 [2024-11-18 08:49:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:47,003 INFO L225 Difference]: With dead ends: 411 [2024-11-18 08:49:47,003 INFO L226 Difference]: Without dead ends: 301 [2024-11-18 08:49:47,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 08:49:47,007 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:47,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 211 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:49:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-18 08:49:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-18 08:49:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.111864406779661) internal successors, (328), 296 states have internal predecessors, (328), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:49:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 334 transitions. [2024-11-18 08:49:47,025 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 334 transitions. Word has length 147 [2024-11-18 08:49:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:47,026 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 334 transitions. [2024-11-18 08:49:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 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) [2024-11-18 08:49:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 334 transitions. [2024-11-18 08:49:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 08:49:47,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:47,034 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:47,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 08:49:47,235 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 [2024-11-18 08:49:47,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:47,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1000041503, now seen corresponding path program 5 times [2024-11-18 08:49:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072337127] [2024-11-18 08:49:47,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:47,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:53,096 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-18 08:49:53,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9123 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-18 08:49:53,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:53,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072337127] [2024-11-18 08:49:53,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072337127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303736843] [2024-11-18 08:49:53,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:53,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:53,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:53,961 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) [2024-11-18 08:49:53,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process