./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.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/data_structures_set_multi_proc_ground-2.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 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:49:21,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:49:22,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:49:22,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:49:22,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:49:22,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:49:22,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:49:22,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:49:22,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:49:22,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:49:22,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:49:22,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:49:22,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:49:22,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:49:22,116 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:49:22,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:49:22,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:49:22,117 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:49:22,118 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:49:22,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:49:22,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:49:22,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:49:22,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:49:22,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:49:22,123 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:49:22,123 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:49:22,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:49:22,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:49:22,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:49:22,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:49:22,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:49:22,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:49:22,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:22,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:49:22,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:49:22,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:49:22,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:49:22,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:49:22,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:49:22,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:49:22,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:49:22,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:49:22,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 [2024-11-18 08:49:22,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:49:22,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:49:22,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:49:22,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:49:22,426 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:49:22,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2024-11-18 08:49:23,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:49:24,127 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:49:24,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2024-11-18 08:49:24,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6407bf75/efe6fe7d545349d9a61a31ed2ca43cbe/FLAGbd0219bb4 [2024-11-18 08:49:24,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6407bf75/efe6fe7d545349d9a61a31ed2ca43cbe [2024-11-18 08:49:24,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:49:24,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:49:24,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:24,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:49:24,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:49:24,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aeee18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24, skipping insertion in model container [2024-11-18 08:49:24,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:49:24,375 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/data_structures_set_multi_proc_ground-2.i[832,845] [2024-11-18 08:49:24,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:24,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:49:24,426 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/data_structures_set_multi_proc_ground-2.i[832,845] [2024-11-18 08:49:24,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:24,464 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:49:24,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24 WrapperNode [2024-11-18 08:49:24,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:24,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:24,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:49:24,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:49:24,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,507 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-11-18 08:49:24,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:24,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:49:24,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:49:24,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:49:24,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,521 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,544 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 3, 7]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-18 08:49:24,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:49:24,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:49:24,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:49:24,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:49:24,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (1/1) ... [2024-11-18 08:49:24,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:24,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:24,614 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 08:49:24,621 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 08:49:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:49:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:49:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:49:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:49:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:49:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:49:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:49:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:49:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:49:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:49:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:49:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:49:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:49:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 08:49:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 08:49:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:49:24,762 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:49:24,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:49:24,984 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-18 08:49:24,985 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:49:25,002 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:49:25,002 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-18 08:49:25,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:25 BoogieIcfgContainer [2024-11-18 08:49:25,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:49:25,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:49:25,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:49:25,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:49:25,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:24" (1/3) ... [2024-11-18 08:49:25,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4e265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:25, skipping insertion in model container [2024-11-18 08:49:25,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:24" (2/3) ... [2024-11-18 08:49:25,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4e265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:25, skipping insertion in model container [2024-11-18 08:49:25,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:25" (3/3) ... [2024-11-18 08:49:25,012 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2024-11-18 08:49:25,030 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:49:25,030 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:49:25,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:49:25,098 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;@53936ff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:49:25,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:49:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 08:49:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 08:49:25,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:25,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:25,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:25,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1976888394, now seen corresponding path program 1 times [2024-11-18 08:49:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443924147] [2024-11-18 08:49:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:25,372 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 08:49:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:25,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443924147] [2024-11-18 08:49:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443924147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:25,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:25,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:49:25,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011584932] [2024-11-18 08:49:25,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:25,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:25,413 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 08:49:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:25,483 INFO L93 Difference]: Finished difference Result 92 states and 144 transitions. [2024-11-18 08:49:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-18 08:49:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:25,496 INFO L225 Difference]: With dead ends: 92 [2024-11-18 08:49:25,496 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 08:49:25,499 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 08:49:25,504 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:25,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:25,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 08:49:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2024-11-18 08:49:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 08:49:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-18 08:49:25,545 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 10 [2024-11-18 08:49:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:25,546 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-18 08:49:25,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 08:49:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-18 08:49:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 08:49:25,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:25,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:25,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:49:25,548 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:25,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1321690828, now seen corresponding path program 1 times [2024-11-18 08:49:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387648435] [2024-11-18 08:49:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387648435] [2024-11-18 08:49:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387648435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377335856] [2024-11-18 08:49:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:25,638 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 08:49:25,640 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 08:49:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:25,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:49:25,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:25,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377335856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:25,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:49:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605157899] [2024-11-18 08:49:25,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:49:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:49:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:25,828 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 08:49:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:25,985 INFO L93 Difference]: Finished difference Result 125 states and 167 transitions. [2024-11-18 08:49:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:49:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 08:49:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:25,991 INFO L225 Difference]: With dead ends: 125 [2024-11-18 08:49:25,991 INFO L226 Difference]: Without dead ends: 92 [2024-11-18 08:49:25,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:25,994 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 50 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:25,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 163 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-18 08:49:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 44. [2024-11-18 08:49:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 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 08:49:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-18 08:49:26,014 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 12 [2024-11-18 08:49:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:26,015 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-18 08:49:26,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 08:49:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-18 08:49:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 08:49:26,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:26,016 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:26,029 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 08:49:26,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:26,217 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:26,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash -202652846, now seen corresponding path program 2 times [2024-11-18 08:49:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:26,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168097605] [2024-11-18 08:49:26,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:26,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 08:49:26,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 08:49:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168097605] [2024-11-18 08:49:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168097605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:26,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:26,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 08:49:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465409377] [2024-11-18 08:49:26,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:26,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 08:49:26,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 08:49:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:49:26,317 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 08:49:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:26,353 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2024-11-18 08:49:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 08:49:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 18 [2024-11-18 08:49:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:26,356 INFO L225 Difference]: With dead ends: 81 [2024-11-18 08:49:26,356 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 08:49:26,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:49:26,358 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:26,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 08:49:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-18 08:49:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-18 08:49:26,368 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 18 [2024-11-18 08:49:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:26,368 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-18 08:49:26,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 08:49:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-18 08:49:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 08:49:26,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:26,370 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:26,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 08:49:26,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:26,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1069304186, now seen corresponding path program 1 times [2024-11-18 08:49:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:26,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450211755] [2024-11-18 08:49:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:26,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 08:49:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450211755] [2024-11-18 08:49:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450211755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:26,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:49:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104303578] [2024-11-18 08:49:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:26,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:26,486 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 08:49:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:26,516 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2024-11-18 08:49:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:26,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 31 [2024-11-18 08:49:26,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:26,520 INFO L225 Difference]: With dead ends: 90 [2024-11-18 08:49:26,521 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 08:49:26,521 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 08:49:26,522 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:26,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 08:49:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2024-11-18 08:49:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-18 08:49:26,531 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 31 [2024-11-18 08:49:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:26,531 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-18 08:49:26,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 08:49:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-18 08:49:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 08:49:26,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:26,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:26,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 08:49:26,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:26,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1327947132, now seen corresponding path program 1 times [2024-11-18 08:49:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132346498] [2024-11-18 08:49:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:26,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 08:49:26,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132346498] [2024-11-18 08:49:26,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132346498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:26,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933533149] [2024-11-18 08:49:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:26,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:26,649 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 08:49:26,651 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 08:49:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:26,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:49:26,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 08:49:26,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 08:49:26,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933533149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:26,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 08:49:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959749149] [2024-11-18 08:49:26,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:26,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 08:49:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 08:49:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:49:26,918 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 08:49:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:27,105 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2024-11-18 08:49:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 08:49:27,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 33 [2024-11-18 08:49:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:27,108 INFO L225 Difference]: With dead ends: 187 [2024-11-18 08:49:27,108 INFO L226 Difference]: Without dead ends: 150 [2024-11-18 08:49:27,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:49:27,109 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:27,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 239 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:49:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-18 08:49:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 72. [2024-11-18 08:49:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2024-11-18 08:49:27,127 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 33 [2024-11-18 08:49:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:27,128 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2024-11-18 08:49:27,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 08:49:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2024-11-18 08:49:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 08:49:27,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:27,130 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:27,146 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 08:49:27,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:27,331 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:27,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1439765920, now seen corresponding path program 1 times [2024-11-18 08:49:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:27,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819075458] [2024-11-18 08:49:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 08:49:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819075458] [2024-11-18 08:49:27,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819075458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:27,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:27,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 08:49:27,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598694455] [2024-11-18 08:49:27,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:27,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 08:49:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 08:49:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:49:27,478 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 08:49:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:27,493 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2024-11-18 08:49:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 08:49:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 53 [2024-11-18 08:49:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:27,494 INFO L225 Difference]: With dead ends: 108 [2024-11-18 08:49:27,495 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 08:49:27,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:49:27,496 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:27,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 08:49:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2024-11-18 08:49:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-18 08:49:27,503 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 53 [2024-11-18 08:49:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:27,504 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-18 08:49:27,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 08:49:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-18 08:49:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 08:49:27,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:27,505 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 08:49:27,506 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1235733610, now seen corresponding path program 1 times [2024-11-18 08:49:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061405891] [2024-11-18 08:49:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:27,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:27,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061405891] [2024-11-18 08:49:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061405891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:27,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445135157] [2024-11-18 08:49:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:27,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:27,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:27,855 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 08:49:27,856 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 08:49:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:27,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:49:27,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:28,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445135157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:28,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:28,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:49:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245644063] [2024-11-18 08:49:28,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:28,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:49:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:49:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:49:28,283 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 08:49:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:28,559 INFO L93 Difference]: Finished difference Result 283 states and 364 transitions. [2024-11-18 08:49:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:49:28,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 53 [2024-11-18 08:49:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:28,564 INFO L225 Difference]: With dead ends: 283 [2024-11-18 08:49:28,565 INFO L226 Difference]: Without dead ends: 231 [2024-11-18 08:49:28,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 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 08:49:28,568 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 281 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:28,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 200 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:49:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-18 08:49:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 99. [2024-11-18 08:49:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 96 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2024-11-18 08:49:28,592 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 53 [2024-11-18 08:49:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:28,593 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2024-11-18 08:49:28,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 08:49:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2024-11-18 08:49:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 08:49:28,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:28,597 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:28,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 08:49:28,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:28,798 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:28,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1201823662, now seen corresponding path program 2 times [2024-11-18 08:49:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:28,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000108638] [2024-11-18 08:49:28,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:28,854 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:28,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000108638] [2024-11-18 08:49:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000108638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153671050] [2024-11-18 08:49:29,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:29,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:29,465 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 08:49:29,467 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 08:49:29,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:29,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:29,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:49:29,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:29,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:49:30,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153671050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:30,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:49:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880635466] [2024-11-18 08:49:30,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:30,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:49:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:49:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:49:30,552 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 08:49:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:31,168 INFO L93 Difference]: Finished difference Result 475 states and 616 transitions. [2024-11-18 08:49:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:49:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 77 [2024-11-18 08:49:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:31,171 INFO L225 Difference]: With dead ends: 475 [2024-11-18 08:49:31,171 INFO L226 Difference]: Without dead ends: 423 [2024-11-18 08:49:31,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 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 08:49:31,175 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 669 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:31,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 291 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 08:49:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-18 08:49:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 147. [2024-11-18 08:49:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 144 states have internal predecessors, (158), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2024-11-18 08:49:31,211 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 77 [2024-11-18 08:49:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:31,211 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2024-11-18 08:49:31,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 08:49:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2024-11-18 08:49:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 08:49:31,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:31,212 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:31,232 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 08:49:31,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:31,413 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:31,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2102943710, now seen corresponding path program 3 times [2024-11-18 08:49:31,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:31,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599972590] [2024-11-18 08:49:31,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:31,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:49:31,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2024-11-18 08:49:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599972590] [2024-11-18 08:49:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599972590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393692811] [2024-11-18 08:49:31,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:31,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:31,509 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 08:49:31,512 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 08:49:31,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:49:31,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:31,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 08:49:31,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2024-11-18 08:49:31,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2024-11-18 08:49:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393692811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:31,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:31,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 08:49:31,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638439492] [2024-11-18 08:49:31,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:31,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 08:49:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:31,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 08:49:31,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:49:31,713 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:31,776 INFO L93 Difference]: Finished difference Result 273 states and 329 transitions. [2024-11-18 08:49:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 08:49:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-18 08:49:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:31,778 INFO L225 Difference]: With dead ends: 273 [2024-11-18 08:49:31,778 INFO L226 Difference]: Without dead ends: 229 [2024-11-18 08:49:31,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:49:31,779 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 101 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:31,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-18 08:49:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2024-11-18 08:49:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.1696428571428572) internal successors, (262), 224 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 264 transitions. [2024-11-18 08:49:31,790 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 264 transitions. Word has length 125 [2024-11-18 08:49:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:31,790 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 264 transitions. [2024-11-18 08:49:31,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 264 transitions. [2024-11-18 08:49:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 08:49:31,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:31,796 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:31,813 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 08:49:31,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:31,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:31,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -457127702, now seen corresponding path program 4 times [2024-11-18 08:49:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:31,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689459950] [2024-11-18 08:49:31,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:32,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:32,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-18 08:49:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689459950] [2024-11-18 08:49:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689459950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:34,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041610669] [2024-11-18 08:49:34,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:34,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:34,153 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 08:49:34,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:49:34,398 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:34,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:34,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 08:49:34,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2024-11-18 08:49:34,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2024-11-18 08:49:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041610669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:34,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 9, 9] total 63 [2024-11-18 08:49:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287700103] [2024-11-18 08:49:34,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 08:49:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 08:49:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=2611, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 08:49:34,856 INFO L87 Difference]: Start difference. First operand 227 states and 264 transitions. Second operand has 63 states, 63 states have (on average 3.2857142857142856) internal successors, (207), 63 states have internal predecessors, (207), 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 08:49:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:35,529 INFO L93 Difference]: Finished difference Result 806 states and 1038 transitions. [2024-11-18 08:49:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-18 08:49:35,529 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.2857142857142856) internal successors, (207), 63 states have internal predecessors, (207), 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 157 [2024-11-18 08:49:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:35,533 INFO L225 Difference]: With dead ends: 806 [2024-11-18 08:49:35,533 INFO L226 Difference]: Without dead ends: 674 [2024-11-18 08:49:35,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1295, Invalid=2611, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 08:49:35,535 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 870 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:35,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 467 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 08:49:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-18 08:49:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 389. [2024-11-18 08:49:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 386 states have (on average 1.2227979274611398) internal successors, (472), 386 states have internal predecessors, (472), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 08:49:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 474 transitions. [2024-11-18 08:49:35,555 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 474 transitions. Word has length 157 [2024-11-18 08:49:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:35,555 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 474 transitions. [2024-11-18 08:49:35,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.2857142857142856) internal successors, (207), 63 states have internal predecessors, (207), 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 08:49:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 474 transitions. [2024-11-18 08:49:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 08:49:35,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:35,558 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:35,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:35,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:35,759 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:35,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1898625864, now seen corresponding path program 5 times [2024-11-18 08:49:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340277863] [2024-11-18 08:49:35,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:36,471 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2024-11-18 08:49:36,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2024-11-18 08:49:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:38,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340277863] [2024-11-18 08:49:38,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340277863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:38,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036851840] [2024-11-18 08:49:38,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:38,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:38,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:38,784 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 08:49:38,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process