./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash eb904c0981d69b458d5d2831cb1cef4022d2f4fca573c75928a054243d001b7a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 00:19:02,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 00:19:02,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 00:19:02,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 00:19:02,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 00:19:02,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 00:19:02,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 00:19:02,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 00:19:02,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 00:19:02,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 00:19:02,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 00:19:02,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 00:19:02,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 00:19:02,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 00:19:02,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 00:19:02,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 00:19:02,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 00:19:02,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 00:19:02,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 00:19:02,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 00:19:02,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 00:19:02,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 00:19:02,184 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 00:19:02,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 00:19:02,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 00:19:02,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 00:19:02,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 00:19:02,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 00:19:02,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 00:19:02,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:19:02,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 00:19:02,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 00:19:02,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 00:19:02,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 00:19:02,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 00:19:02,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 00:19:02,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 00:19:02,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 00:19:02,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 00:19:02,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb904c0981d69b458d5d2831cb1cef4022d2f4fca573c75928a054243d001b7a [2024-11-20 00:19:02,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 00:19:02,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 00:19:02,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 00:19:02,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 00:19:02,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 00:19:02,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-20 00:19:03,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 00:19:04,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 00:19:04,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-20 00:19:04,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958727261/37ffb8c7447f4cd4bd13e495693f3e31/FLAGbbe36b702 [2024-11-20 00:19:04,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958727261/37ffb8c7447f4cd4bd13e495693f3e31 [2024-11-20 00:19:04,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 00:19:04,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 00:19:04,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 00:19:04,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 00:19:04,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 00:19:04,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:04,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23aaf4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04, skipping insertion in model container [2024-11-20 00:19:04,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:04,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 00:19:04,492 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/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2024-11-20 00:19:04,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:19:04,791 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 00:19:04,802 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/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2024-11-20 00:19:04,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:19:04,930 INFO L204 MainTranslator]: Completed translation [2024-11-20 00:19:04,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04 WrapperNode [2024-11-20 00:19:04,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 00:19:04,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 00:19:04,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 00:19:04,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 00:19:04,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:04,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,544 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3733 [2024-11-20 00:19:05,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 00:19:05,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 00:19:05,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 00:19:05,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 00:19:05,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,848 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 8, 29, 24]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 4, 14, 12]. [2024-11-20 00:19:05,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:05,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:06,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:06,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:06,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:06,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 00:19:06,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 00:19:06,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 00:19:06,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 00:19:06,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (1/1) ... [2024-11-20 00:19:06,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:19:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:06,246 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) [2024-11-20 00:19:06,252 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 [2024-11-20 00:19:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 00:19:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 00:19:06,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 00:19:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 00:19:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 00:19:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 00:19:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 00:19:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 00:19:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 00:19:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 00:19:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 00:19:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 00:19:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 00:19:06,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 00:19:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 00:19:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 00:19:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 00:19:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 00:19:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 00:19:06,676 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 00:19:06,679 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 00:19:10,352 INFO L? ?]: Removed 1909 outVars from TransFormulas that were not future-live. [2024-11-20 00:19:10,353 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 00:19:10,382 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 00:19:10,383 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-20 00:19:10,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:10 BoogieIcfgContainer [2024-11-20 00:19:10,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 00:19:10,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 00:19:10,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 00:19:10,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 00:19:10,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:19:04" (1/3) ... [2024-11-20 00:19:10,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2621de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:10, skipping insertion in model container [2024-11-20 00:19:10,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:04" (2/3) ... [2024-11-20 00:19:10,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2621de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:10, skipping insertion in model container [2024-11-20 00:19:10,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:10" (3/3) ... [2024-11-20 00:19:10,396 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-20 00:19:10,415 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 00:19:10,416 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 00:19:10,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 00:19:10,515 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;@78d55e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 00:19:10,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 00:19:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 1149 states, 1141 states have (on average 1.5039439088518842) internal successors, (1716), 1142 states have internal predecessors, (1716), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-20 00:19:10,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:10,558 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:10,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:10,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1945809250, now seen corresponding path program 1 times [2024-11-20 00:19:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626779256] [2024-11-20 00:19:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-20 00:19:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-20 00:19:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-11-20 00:19:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-11-20 00:19:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-20 00:19:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:19:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:11,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626779256] [2024-11-20 00:19:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626779256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:19:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:19:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 00:19:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281179804] [2024-11-20 00:19:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:11,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 00:19:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 00:19:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 00:19:11,330 INFO L87 Difference]: Start difference. First operand has 1149 states, 1141 states have (on average 1.5039439088518842) internal successors, (1716), 1142 states have internal predecessors, (1716), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:19:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:11,435 INFO L93 Difference]: Finished difference Result 2287 states and 3443 transitions. [2024-11-20 00:19:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 00:19:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 335 [2024-11-20 00:19:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:11,463 INFO L225 Difference]: With dead ends: 2287 [2024-11-20 00:19:11,464 INFO L226 Difference]: Without dead ends: 1146 [2024-11-20 00:19:11,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 00:19:11,475 INFO L432 NwaCegarLoop]: 1703 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:11,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:19:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-11-20 00:19:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2024-11-20 00:19:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1139 states have (on average 1.4863915715539948) internal successors, (1693), 1139 states have internal predecessors, (1693), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1703 transitions. [2024-11-20 00:19:11,577 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1703 transitions. Word has length 335 [2024-11-20 00:19:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:11,578 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1703 transitions. [2024-11-20 00:19:11,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:19:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1703 transitions. [2024-11-20 00:19:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-20 00:19:11,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:11,616 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:11,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 00:19:11,617 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:11,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1905328852, now seen corresponding path program 1 times [2024-11-20 00:19:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313226349] [2024-11-20 00:19:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-20 00:19:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-20 00:19:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-11-20 00:19:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-11-20 00:19:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-20 00:19:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:19:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313226349] [2024-11-20 00:19:12,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313226349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:19:12,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:19:12,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 00:19:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503534190] [2024-11-20 00:19:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:12,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:19:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:19:12,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 00:19:12,324 INFO L87 Difference]: Start difference. First operand 1146 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:12,372 INFO L93 Difference]: Finished difference Result 2290 states and 3404 transitions. [2024-11-20 00:19:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:19:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 335 [2024-11-20 00:19:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:12,378 INFO L225 Difference]: With dead ends: 2290 [2024-11-20 00:19:12,379 INFO L226 Difference]: Without dead ends: 1152 [2024-11-20 00:19:12,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 00:19:12,384 INFO L432 NwaCegarLoop]: 1700 mSDtfsCounter, 7 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:12,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3397 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:19:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2024-11-20 00:19:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1147. [2024-11-20 00:19:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1140 states have (on average 1.4859649122807017) internal successors, (1694), 1140 states have internal predecessors, (1694), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1704 transitions. [2024-11-20 00:19:12,412 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1704 transitions. Word has length 335 [2024-11-20 00:19:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:12,413 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1704 transitions. [2024-11-20 00:19:12,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1704 transitions. [2024-11-20 00:19:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-20 00:19:12,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:12,420 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:12,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 00:19:12,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:12,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 154574607, now seen corresponding path program 1 times [2024-11-20 00:19:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:12,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018203633] [2024-11-20 00:19:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:12,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-20 00:19:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-11-20 00:19:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-11-20 00:19:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-11-20 00:19:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-11-20 00:19:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:19:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018203633] [2024-11-20 00:19:13,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018203633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106603311] [2024-11-20 00:19:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:13,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:13,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:13,124 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) [2024-11-20 00:19:13,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 00:19:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:13,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 00:19:13,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:19:13,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-20 00:19:13,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106603311] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:13,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-20 00:19:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382548522] [2024-11-20 00:19:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:13,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:19:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:19:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:19:13,963 INFO L87 Difference]: Start difference. First operand 1147 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:14,005 INFO L93 Difference]: Finished difference Result 2104 states and 3126 transitions. [2024-11-20 00:19:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:19:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 339 [2024-11-20 00:19:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:14,011 INFO L225 Difference]: With dead ends: 2104 [2024-11-20 00:19:14,011 INFO L226 Difference]: Without dead ends: 1148 [2024-11-20 00:19:14,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:19:14,015 INFO L432 NwaCegarLoop]: 1700 mSDtfsCounter, 7 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:14,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3391 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:19:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2024-11-20 00:19:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1148. [2024-11-20 00:19:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1141 states have (on average 1.4855390008764242) internal successors, (1695), 1141 states have internal predecessors, (1695), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1705 transitions. [2024-11-20 00:19:14,043 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1705 transitions. Word has length 339 [2024-11-20 00:19:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:14,045 INFO L471 AbstractCegarLoop]: Abstraction has 1148 states and 1705 transitions. [2024-11-20 00:19:14,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1705 transitions. [2024-11-20 00:19:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-20 00:19:14,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:14,051 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:14,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 00:19:14,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:14,256 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:14,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash -865820726, now seen corresponding path program 1 times [2024-11-20 00:19:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:14,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302818685] [2024-11-20 00:19:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-11-20 00:19:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-11-20 00:19:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-20 00:19:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-20 00:19:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302818685] [2024-11-20 00:19:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302818685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650937813] [2024-11-20 00:19:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:14,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:14,877 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) [2024-11-20 00:19:14,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 00:19:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:15,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 00:19:15,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 00:19:15,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:19:15,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650937813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:19:15,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:19:15,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-20 00:19:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002472398] [2024-11-20 00:19:15,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:15,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:19:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:19:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:19:15,635 INFO L87 Difference]: Start difference. First operand 1148 states and 1705 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:15,683 INFO L93 Difference]: Finished difference Result 2286 states and 3397 transitions. [2024-11-20 00:19:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:19:15,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 343 [2024-11-20 00:19:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:15,689 INFO L225 Difference]: With dead ends: 2286 [2024-11-20 00:19:15,689 INFO L226 Difference]: Without dead ends: 1154 [2024-11-20 00:19:15,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:19:15,692 INFO L432 NwaCegarLoop]: 1700 mSDtfsCounter, 7 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:15,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3396 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:19:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-20 00:19:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1149. [2024-11-20 00:19:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1142 states have (on average 1.4851138353765323) internal successors, (1696), 1142 states have internal predecessors, (1696), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1706 transitions. [2024-11-20 00:19:15,721 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1706 transitions. Word has length 343 [2024-11-20 00:19:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:15,722 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1706 transitions. [2024-11-20 00:19:15,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1706 transitions. [2024-11-20 00:19:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-20 00:19:15,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:15,728 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:15,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 00:19:15,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 00:19:15,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:15,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 498220933, now seen corresponding path program 1 times [2024-11-20 00:19:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007676903] [2024-11-20 00:19:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-11-20 00:19:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-11-20 00:19:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-11-20 00:19:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-11-20 00:19:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-11-20 00:19:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 00:19:16,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007676903] [2024-11-20 00:19:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007676903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504583111] [2024-11-20 00:19:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:16,469 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) [2024-11-20 00:19:16,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 00:19:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:17,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-20 00:19:17,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 00:19:17,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 00:19:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504583111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:19:18,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:19:18,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 11 [2024-11-20 00:19:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085627830] [2024-11-20 00:19:18,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:19:18,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 00:19:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 00:19:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:19:18,045 INFO L87 Difference]: Start difference. First operand 1149 states and 1706 transitions. Second operand has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:20,425 INFO L93 Difference]: Finished difference Result 2300 states and 3416 transitions. [2024-11-20 00:19:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:19:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 347 [2024-11-20 00:19:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:20,430 INFO L225 Difference]: With dead ends: 2300 [2024-11-20 00:19:20,431 INFO L226 Difference]: Without dead ends: 1160 [2024-11-20 00:19:20,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:19:20,433 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 4359 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 4143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:20,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 6081 Invalid, 4143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-20 00:19:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-11-20 00:19:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1155. [2024-11-20 00:19:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1148 states have (on average 1.4834494773519165) internal successors, (1703), 1148 states have internal predecessors, (1703), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1713 transitions. [2024-11-20 00:19:20,464 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1713 transitions. Word has length 347 [2024-11-20 00:19:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1713 transitions. [2024-11-20 00:19:20,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1713 transitions. [2024-11-20 00:19:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-20 00:19:20,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:20,480 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:20,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 00:19:20,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:20,681 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:20,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1741629918, now seen corresponding path program 1 times [2024-11-20 00:19:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235891446] [2024-11-20 00:19:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-11-20 00:19:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-11-20 00:19:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-11-20 00:19:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-11-20 00:19:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-20 00:19:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 00:19:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235891446] [2024-11-20 00:19:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235891446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147087992] [2024-11-20 00:19:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:21,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:21,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:21,221 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) [2024-11-20 00:19:21,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 00:19:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:21,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 00:19:21,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-20 00:19:21,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-20 00:19:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147087992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:19:21,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:19:21,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-11-20 00:19:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967156763] [2024-11-20 00:19:21,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:19:21,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:19:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:19:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:19:21,948 INFO L87 Difference]: Start difference. First operand 1155 states and 1713 transitions. Second operand has 9 states, 9 states have (on average 49.111111111111114) internal successors, (442), 9 states have internal predecessors, (442), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:22,069 INFO L93 Difference]: Finished difference Result 2324 states and 3449 transitions. [2024-11-20 00:19:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 00:19:22,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 49.111111111111114) internal successors, (442), 9 states have internal predecessors, (442), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 352 [2024-11-20 00:19:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:22,074 INFO L225 Difference]: With dead ends: 2324 [2024-11-20 00:19:22,075 INFO L226 Difference]: Without dead ends: 1184 [2024-11-20 00:19:22,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 00:19:22,078 INFO L432 NwaCegarLoop]: 1706 mSDtfsCounter, 59 mSDsluCounter, 8493 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 10199 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:22,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 10199 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 00:19:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-20 00:19:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1179. [2024-11-20 00:19:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1172 states have (on average 1.4803754266211604) internal successors, (1735), 1172 states have internal predecessors, (1735), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1745 transitions. [2024-11-20 00:19:22,106 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1745 transitions. Word has length 352 [2024-11-20 00:19:22,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:22,106 INFO L471 AbstractCegarLoop]: Abstraction has 1179 states and 1745 transitions. [2024-11-20 00:19:22,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.111111111111114) internal successors, (442), 9 states have internal predecessors, (442), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1745 transitions. [2024-11-20 00:19:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-20 00:19:22,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:22,112 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:22,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:22,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:22,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:22,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash -854711950, now seen corresponding path program 2 times [2024-11-20 00:19:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653092191] [2024-11-20 00:19:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-11-20 00:19:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-11-20 00:19:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-11-20 00:19:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-11-20 00:19:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-20 00:19:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-20 00:19:22,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:22,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653092191] [2024-11-20 00:19:22,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653092191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:22,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488168343] [2024-11-20 00:19:22,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 00:19:22,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:22,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:22,883 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) [2024-11-20 00:19:22,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 00:19:23,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 00:19:23,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 00:19:23,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 00:19:23,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-20 00:19:23,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:19:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488168343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:19:23,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:19:23,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-20 00:19:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311902062] [2024-11-20 00:19:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:23,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:19:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:19:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:19:23,948 INFO L87 Difference]: Start difference. First operand 1179 states and 1745 transitions. Second operand has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:25,804 INFO L93 Difference]: Finished difference Result 1874 states and 2773 transitions. [2024-11-20 00:19:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:19:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 368 [2024-11-20 00:19:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:25,811 INFO L225 Difference]: With dead ends: 1874 [2024-11-20 00:19:25,811 INFO L226 Difference]: Without dead ends: 1183 [2024-11-20 00:19:25,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:19:25,814 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 1446 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 3401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:25,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5116 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3401 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 00:19:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-11-20 00:19:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2024-11-20 00:19:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1176 states have (on average 1.4787414965986394) internal successors, (1739), 1176 states have internal predecessors, (1739), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1749 transitions. [2024-11-20 00:19:25,841 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1749 transitions. Word has length 368 [2024-11-20 00:19:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:25,843 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1749 transitions. [2024-11-20 00:19:25,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1749 transitions. [2024-11-20 00:19:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-20 00:19:25,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:25,846 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:25,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:26,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:26,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:26,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:26,048 INFO L85 PathProgramCache]: Analyzing trace with hash -724569511, now seen corresponding path program 1 times [2024-11-20 00:19:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:26,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427111589] [2024-11-20 00:19:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:26,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-11-20 00:19:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-11-20 00:19:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-11-20 00:19:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-11-20 00:19:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-20 00:19:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-20 00:19:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427111589] [2024-11-20 00:19:26,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427111589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:26,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077538805] [2024-11-20 00:19:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:26,543 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) [2024-11-20 00:19:26,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 00:19:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:27,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 00:19:27,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-20 00:19:27,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-20 00:19:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077538805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:19:27,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:19:27,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 15 [2024-11-20 00:19:27,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627926106] [2024-11-20 00:19:27,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:19:27,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 00:19:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 00:19:27,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:19:27,591 INFO L87 Difference]: Start difference. First operand 1183 states and 1749 transitions. Second operand has 15 states, 15 states have (on average 24.533333333333335) internal successors, (368), 15 states have internal predecessors, (368), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:27,756 INFO L93 Difference]: Finished difference Result 2356 states and 3486 transitions. [2024-11-20 00:19:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:19:27,757 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.533333333333335) internal successors, (368), 15 states have internal predecessors, (368), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 369 [2024-11-20 00:19:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:27,762 INFO L225 Difference]: With dead ends: 2356 [2024-11-20 00:19:27,762 INFO L226 Difference]: Without dead ends: 1194 [2024-11-20 00:19:27,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:19:27,765 INFO L432 NwaCegarLoop]: 1714 mSDtfsCounter, 56 mSDsluCounter, 13667 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15381 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:27,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15381 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 00:19:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2024-11-20 00:19:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1189. [2024-11-20 00:19:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1182 states have (on average 1.4780033840947546) internal successors, (1747), 1182 states have internal predecessors, (1747), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1757 transitions. [2024-11-20 00:19:27,795 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1757 transitions. Word has length 369 [2024-11-20 00:19:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:27,796 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1757 transitions. [2024-11-20 00:19:27,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.533333333333335) internal successors, (368), 15 states have internal predecessors, (368), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-20 00:19:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1757 transitions. [2024-11-20 00:19:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-20 00:19:27,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:27,801 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:27,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 00:19:28,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:28,005 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:28,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash 201506772, now seen corresponding path program 2 times [2024-11-20 00:19:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104662262] [2024-11-20 00:19:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:28,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-11-20 00:19:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-11-20 00:19:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-11-20 00:19:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-11-20 00:19:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-11-20 00:19:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104662262] [2024-11-20 00:19:28,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104662262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473831921] [2024-11-20 00:19:28,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 00:19:28,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:28,480 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) [2024-11-20 00:19:28,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 00:19:29,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 00:19:29,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 00:19:29,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 00:19:29,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:29,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:19:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473831921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:19:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:19:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-20 00:19:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681114072] [2024-11-20 00:19:29,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:29,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:19:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:19:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:19:29,239 INFO L87 Difference]: Start difference. First operand 1189 states and 1757 transitions. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:30,163 INFO L93 Difference]: Finished difference Result 2306 states and 3406 transitions. [2024-11-20 00:19:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:19:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 373 [2024-11-20 00:19:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:30,172 INFO L225 Difference]: With dead ends: 2306 [2024-11-20 00:19:30,173 INFO L226 Difference]: Without dead ends: 1611 [2024-11-20 00:19:30,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:19:30,176 INFO L432 NwaCegarLoop]: 2101 mSDtfsCounter, 1184 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 7337 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:30,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 7337 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 00:19:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2024-11-20 00:19:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1207. [2024-11-20 00:19:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1200 states have (on average 1.4766666666666666) internal successors, (1772), 1200 states have internal predecessors, (1772), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1782 transitions. [2024-11-20 00:19:30,210 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1782 transitions. Word has length 373 [2024-11-20 00:19:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:30,211 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1782 transitions. [2024-11-20 00:19:30,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 00:19:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1782 transitions. [2024-11-20 00:19:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-20 00:19:30,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:30,216 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:30,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 00:19:30,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:30,417 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:30,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1393892373, now seen corresponding path program 1 times [2024-11-20 00:19:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870582369] [2024-11-20 00:19:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-11-20 00:19:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-11-20 00:19:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-11-20 00:19:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870582369] [2024-11-20 00:19:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870582369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376935141] [2024-11-20 00:19:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:30,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:30,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 00:19:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:31,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-20 00:19:31,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-20 00:19:32,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376935141] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 7] total 20 [2024-11-20 00:19:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973276239] [2024-11-20 00:19:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:35,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 00:19:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 00:19:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-20 00:19:35,367 INFO L87 Difference]: Start difference. First operand 1207 states and 1782 transitions. Second operand has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:19:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:38,265 INFO L93 Difference]: Finished difference Result 2461 states and 3633 transitions. [2024-11-20 00:19:38,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 00:19:38,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 374 [2024-11-20 00:19:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:38,270 INFO L225 Difference]: With dead ends: 2461 [2024-11-20 00:19:38,270 INFO L226 Difference]: Without dead ends: 1209 [2024-11-20 00:19:38,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-11-20 00:19:38,274 INFO L432 NwaCegarLoop]: 1718 mSDtfsCounter, 5492 mSDsluCounter, 8398 mSDsCounter, 0 mSdLazyCounter, 5781 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 10116 SdHoareTripleChecker+Invalid, 5827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:38,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5494 Valid, 10116 Invalid, 5827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5781 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-20 00:19:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-20 00:19:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-20 00:19:38,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1202 states have (on average 1.4750415973377704) internal successors, (1773), 1202 states have internal predecessors, (1773), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1783 transitions. [2024-11-20 00:19:38,299 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1783 transitions. Word has length 374 [2024-11-20 00:19:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:38,300 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1783 transitions. [2024-11-20 00:19:38,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:19:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1783 transitions. [2024-11-20 00:19:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-20 00:19:38,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:38,303 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:38,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:38,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 00:19:38,504 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:38,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash 536825502, now seen corresponding path program 1 times [2024-11-20 00:19:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390244743] [2024-11-20 00:19:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-11-20 00:19:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-20 00:19:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-11-20 00:19:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390244743] [2024-11-20 00:19:38,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390244743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648674321] [2024-11-20 00:19:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:38,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:38,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:38,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 00:19:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:39,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-20 00:19:39,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-20 00:19:40,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648674321] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:40,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:40,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-20 00:19:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578085545] [2024-11-20 00:19:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:40,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:19:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:19:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-20 00:19:40,761 INFO L87 Difference]: Start difference. First operand 1209 states and 1783 transitions. Second operand has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:42,304 INFO L93 Difference]: Finished difference Result 1926 states and 2838 transitions. [2024-11-20 00:19:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:19:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 375 [2024-11-20 00:19:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:42,311 INFO L225 Difference]: With dead ends: 1926 [2024-11-20 00:19:42,311 INFO L226 Difference]: Without dead ends: 1211 [2024-11-20 00:19:42,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-20 00:19:42,313 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 8380 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:42,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8384 Valid, 4010 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:19:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-20 00:19:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2024-11-20 00:19:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1204 states have (on average 1.473421926910299) internal successors, (1774), 1204 states have internal predecessors, (1774), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1784 transitions. [2024-11-20 00:19:42,341 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1784 transitions. Word has length 375 [2024-11-20 00:19:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:42,342 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1784 transitions. [2024-11-20 00:19:42,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1784 transitions. [2024-11-20 00:19:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-20 00:19:42,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:42,345 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:42,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 00:19:42,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:42,546 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:42,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -503109183, now seen corresponding path program 1 times [2024-11-20 00:19:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343357001] [2024-11-20 00:19:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-11-20 00:19:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-20 00:19:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-11-20 00:19:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:42,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343357001] [2024-11-20 00:19:42,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343357001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755152538] [2024-11-20 00:19:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:42,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:42,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:42,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 00:19:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:43,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-20 00:19:43,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-20 00:19:44,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755152538] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:44,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:44,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 9] total 19 [2024-11-20 00:19:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460285860] [2024-11-20 00:19:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:44,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:19:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:19:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-20 00:19:44,627 INFO L87 Difference]: Start difference. First operand 1211 states and 1784 transitions. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:46,029 INFO L93 Difference]: Finished difference Result 1929 states and 2839 transitions. [2024-11-20 00:19:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:19:46,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 376 [2024-11-20 00:19:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:46,036 INFO L225 Difference]: With dead ends: 1929 [2024-11-20 00:19:46,037 INFO L226 Difference]: Without dead ends: 1212 [2024-11-20 00:19:46,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-11-20 00:19:46,040 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 3310 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:46,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3312 Valid, 4001 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 00:19:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2024-11-20 00:19:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2024-11-20 00:19:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1205 states have (on average 1.4730290456431536) internal successors, (1775), 1205 states have internal predecessors, (1775), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1785 transitions. [2024-11-20 00:19:46,066 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1785 transitions. Word has length 376 [2024-11-20 00:19:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:46,067 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1785 transitions. [2024-11-20 00:19:46,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1785 transitions. [2024-11-20 00:19:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-20 00:19:46,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:46,070 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:46,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:46,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 00:19:46,271 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:46,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1794837951, now seen corresponding path program 1 times [2024-11-20 00:19:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413913364] [2024-11-20 00:19:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-11-20 00:19:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-20 00:19:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-11-20 00:19:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:46,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413913364] [2024-11-20 00:19:46,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413913364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:46,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756403658] [2024-11-20 00:19:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:46,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:46,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:46,691 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:46,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 00:19:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:47,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-20 00:19:47,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-20 00:19:48,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756403658] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:48,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-20 00:19:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63699352] [2024-11-20 00:19:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:48,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:19:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:48,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:19:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-20 00:19:48,304 INFO L87 Difference]: Start difference. First operand 1212 states and 1785 transitions. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:49,730 INFO L93 Difference]: Finished difference Result 1931 states and 2841 transitions. [2024-11-20 00:19:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:19:49,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 377 [2024-11-20 00:19:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:49,735 INFO L225 Difference]: With dead ends: 1931 [2024-11-20 00:19:49,735 INFO L226 Difference]: Without dead ends: 1213 [2024-11-20 00:19:49,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-20 00:19:49,737 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 6684 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:49,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6687 Valid, 4010 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 00:19:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-20 00:19:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-20 00:19:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1206 states have (on average 1.472636815920398) internal successors, (1776), 1206 states have internal predecessors, (1776), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1786 transitions. [2024-11-20 00:19:49,760 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1786 transitions. Word has length 377 [2024-11-20 00:19:49,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:49,761 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1786 transitions. [2024-11-20 00:19:49,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1786 transitions. [2024-11-20 00:19:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-20 00:19:49,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:49,764 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:49,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:49,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 00:19:49,965 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:49,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1308973103, now seen corresponding path program 1 times [2024-11-20 00:19:49,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:49,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697207850] [2024-11-20 00:19:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-11-20 00:19:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-11-20 00:19:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-11-20 00:19:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-11-20 00:19:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697207850] [2024-11-20 00:19:50,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697207850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501186293] [2024-11-20 00:19:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:50,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:50,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:50,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 00:19:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:51,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-20 00:19:51,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-20 00:19:51,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501186293] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2024-11-20 00:19:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567598846] [2024-11-20 00:19:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:51,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:19:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:19:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:19:51,912 INFO L87 Difference]: Start difference. First operand 1213 states and 1786 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:54,459 INFO L93 Difference]: Finished difference Result 1988 states and 2921 transitions. [2024-11-20 00:19:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:19:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 378 [2024-11-20 00:19:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:54,466 INFO L225 Difference]: With dead ends: 1988 [2024-11-20 00:19:54,467 INFO L226 Difference]: Without dead ends: 1215 [2024-11-20 00:19:54,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-20 00:19:54,469 INFO L432 NwaCegarLoop]: 1066 mSDtfsCounter, 1707 mSDsluCounter, 7164 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 8230 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:54,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 8230 Invalid, 5637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5633 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-20 00:19:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-20 00:19:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2024-11-20 00:19:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1208 states have (on average 1.471026490066225) internal successors, (1777), 1208 states have internal predecessors, (1777), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1787 transitions. [2024-11-20 00:19:54,497 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1787 transitions. Word has length 378 [2024-11-20 00:19:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:54,498 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1787 transitions. [2024-11-20 00:19:54,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1787 transitions. [2024-11-20 00:19:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-20 00:19:54,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:54,501 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:54,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 00:19:54,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 00:19:54,702 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:54,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2134211323, now seen corresponding path program 1 times [2024-11-20 00:19:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784628870] [2024-11-20 00:19:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-20 00:19:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-11-20 00:19:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-11-20 00:19:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-11-20 00:19:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784628870] [2024-11-20 00:19:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784628870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199770832] [2024-11-20 00:19:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:55,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:55,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:55,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 00:19:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:55,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-20 00:19:55,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:19:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-20 00:19:56,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:19:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:19:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199770832] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:19:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2024-11-20 00:19:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649291422] [2024-11-20 00:19:56,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:19:56,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:19:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:19:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:19:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:19:56,664 INFO L87 Difference]: Start difference. First operand 1215 states and 1787 transitions. Second operand has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:19:58,901 INFO L93 Difference]: Finished difference Result 1970 states and 2890 transitions. [2024-11-20 00:19:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:19:58,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 379 [2024-11-20 00:19:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:19:58,905 INFO L225 Difference]: With dead ends: 1970 [2024-11-20 00:19:58,906 INFO L226 Difference]: Without dead ends: 1217 [2024-11-20 00:19:58,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-20 00:19:58,907 INFO L432 NwaCegarLoop]: 1029 mSDtfsCounter, 1737 mSDsluCounter, 6065 mSDsCounter, 0 mSdLazyCounter, 4921 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 7094 SdHoareTripleChecker+Invalid, 4928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:19:58,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 7094 Invalid, 4928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4921 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-20 00:19:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-20 00:19:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2024-11-20 00:19:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1210 states have (on average 1.4694214876033058) internal successors, (1778), 1210 states have internal predecessors, (1778), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:19:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1788 transitions. [2024-11-20 00:19:58,944 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1788 transitions. Word has length 379 [2024-11-20 00:19:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:19:58,945 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1788 transitions. [2024-11-20 00:19:58,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:19:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1788 transitions. [2024-11-20 00:19:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-20 00:19:58,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:19:58,949 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:19:58,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 00:19:59,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 00:19:59,150 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:19:59,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:19:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 207107770, now seen corresponding path program 1 times [2024-11-20 00:19:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:19:59,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889685325] [2024-11-20 00:19:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:59,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:19:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:19:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-20 00:19:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-11-20 00:19:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-11-20 00:19:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-11-20 00:19:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:19:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:19:59,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:19:59,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889685325] [2024-11-20 00:19:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889685325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:19:59,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202205315] [2024-11-20 00:19:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:19:59,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:19:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:19:59,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:19:59,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 00:20:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:00,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-20 00:20:00,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:20:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-20 00:20:00,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:20:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:20:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202205315] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:20:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 9] total 19 [2024-11-20 00:20:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163382853] [2024-11-20 00:20:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:20:01,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:20:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:20:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:20:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-20 00:20:01,175 INFO L87 Difference]: Start difference. First operand 1217 states and 1788 transitions. Second operand has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:20:02,625 INFO L93 Difference]: Finished difference Result 1941 states and 2847 transitions. [2024-11-20 00:20:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:20:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 380 [2024-11-20 00:20:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:20:02,632 INFO L225 Difference]: With dead ends: 1941 [2024-11-20 00:20:02,632 INFO L226 Difference]: Without dead ends: 1218 [2024-11-20 00:20:02,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-11-20 00:20:02,634 INFO L432 NwaCegarLoop]: 1001 mSDtfsCounter, 6672 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:20:02,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6675 Valid, 4011 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:20:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2024-11-20 00:20:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2024-11-20 00:20:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1211 states have (on average 1.4690338563170933) internal successors, (1779), 1211 states have internal predecessors, (1779), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:20:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1789 transitions. [2024-11-20 00:20:02,655 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1789 transitions. Word has length 380 [2024-11-20 00:20:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:20:02,656 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1789 transitions. [2024-11-20 00:20:02,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1789 transitions. [2024-11-20 00:20:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-20 00:20:02,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:20:02,662 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:20:02,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 00:20:02,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:02,863 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:20:02,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:20:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash -29655138, now seen corresponding path program 1 times [2024-11-20 00:20:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:20:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78150268] [2024-11-20 00:20:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:20:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:20:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-20 00:20:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-20 00:20:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-20 00:20:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-11-20 00:20:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:03,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:20:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78150268] [2024-11-20 00:20:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78150268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485854592] [2024-11-20 00:20:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:03,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:03,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:20:03,239 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:20:03,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 00:20:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:04,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-20 00:20:04,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:20:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-20 00:20:04,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:20:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:20:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485854592] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:20:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-20 00:20:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392897654] [2024-11-20 00:20:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:20:04,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:20:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:20:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:20:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-20 00:20:04,932 INFO L87 Difference]: Start difference. First operand 1218 states and 1789 transitions. Second operand has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:20:06,390 INFO L93 Difference]: Finished difference Result 1943 states and 2849 transitions. [2024-11-20 00:20:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:20:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 381 [2024-11-20 00:20:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:20:06,396 INFO L225 Difference]: With dead ends: 1943 [2024-11-20 00:20:06,396 INFO L226 Difference]: Without dead ends: 1219 [2024-11-20 00:20:06,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-20 00:20:06,398 INFO L432 NwaCegarLoop]: 1001 mSDtfsCounter, 6720 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6724 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:20:06,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6724 Valid, 4020 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:20:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-20 00:20:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2024-11-20 00:20:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1212 states have (on average 1.4686468646864685) internal successors, (1780), 1212 states have internal predecessors, (1780), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:20:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1790 transitions. [2024-11-20 00:20:06,422 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1790 transitions. Word has length 381 [2024-11-20 00:20:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:20:06,422 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1790 transitions. [2024-11-20 00:20:06,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1790 transitions. [2024-11-20 00:20:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-20 00:20:06,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:20:06,428 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:20:06,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 00:20:06,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 00:20:06,630 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:20:06,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:20:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1881859639, now seen corresponding path program 1 times [2024-11-20 00:20:06,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:20:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42673236] [2024-11-20 00:20:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:06,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:20:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:06,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-11-20 00:20:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-20 00:20:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-11-20 00:20:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-11-20 00:20:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-11-20 00:20:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:07,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:20:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42673236] [2024-11-20 00:20:07,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42673236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108436020] [2024-11-20 00:20:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:07,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:20:07,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:20:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 00:20:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:07,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-20 00:20:07,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:20:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:08,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:20:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:20:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108436020] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:20:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2024-11-20 00:20:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96239832] [2024-11-20 00:20:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:20:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:20:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:20:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:20:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:20:08,612 INFO L87 Difference]: Start difference. First operand 1219 states and 1790 transitions. Second operand has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:20:10,818 INFO L93 Difference]: Finished difference Result 1990 states and 2914 transitions. [2024-11-20 00:20:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:20:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 382 [2024-11-20 00:20:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:20:10,822 INFO L225 Difference]: With dead ends: 1990 [2024-11-20 00:20:10,822 INFO L226 Difference]: Without dead ends: 1221 [2024-11-20 00:20:10,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-20 00:20:10,824 INFO L432 NwaCegarLoop]: 1013 mSDtfsCounter, 1807 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 4877 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 7006 SdHoareTripleChecker+Invalid, 4883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:20:10,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 7006 Invalid, 4883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4877 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-20 00:20:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2024-11-20 00:20:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2024-11-20 00:20:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1214 states have (on average 1.4670510708401976) internal successors, (1781), 1214 states have internal predecessors, (1781), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 00:20:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1791 transitions. [2024-11-20 00:20:10,844 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1791 transitions. Word has length 382 [2024-11-20 00:20:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:20:10,845 INFO L471 AbstractCegarLoop]: Abstraction has 1221 states and 1791 transitions. [2024-11-20 00:20:10,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1791 transitions. [2024-11-20 00:20:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-20 00:20:10,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:20:10,848 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-20 00:20:10,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 00:20:11,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 00:20:11,049 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:20:11,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:20:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -570903613, now seen corresponding path program 1 times [2024-11-20 00:20:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:20:11,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086998203] [2024-11-20 00:20:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:11,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:20:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-11-20 00:20:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-20 00:20:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-11-20 00:20:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-11-20 00:20:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-11-20 00:20:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:11,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:20:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086998203] [2024-11-20 00:20:11,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086998203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:11,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259119043] [2024-11-20 00:20:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:20:11,409 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:20:11,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 00:20:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:12,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 00:20:12,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:20:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:12,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:20:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:20:13,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259119043] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:13,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:20:13,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2024-11-20 00:20:13,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857729560] [2024-11-20 00:20:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:20:13,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:20:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:20:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:20:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:20:13,038 INFO L87 Difference]: Start difference. First operand 1221 states and 1791 transitions. Second operand has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:20:15,424 INFO L93 Difference]: Finished difference Result 2672 states and 3910 transitions. [2024-11-20 00:20:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 00:20:15,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 383 [2024-11-20 00:20:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:20:15,429 INFO L225 Difference]: With dead ends: 2672 [2024-11-20 00:20:15,429 INFO L226 Difference]: Without dead ends: 1942 [2024-11-20 00:20:15,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-20 00:20:15,430 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1940 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 4584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 7573 SdHoareTripleChecker+Invalid, 4586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:20:15,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 7573 Invalid, 4586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4584 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-20 00:20:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2024-11-20 00:20:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1940. [2024-11-20 00:20:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1928 states have (on average 1.4652489626556016) internal successors, (2825), 1928 states have internal predecessors, (2825), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 00:20:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2845 transitions. [2024-11-20 00:20:15,461 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2845 transitions. Word has length 383 [2024-11-20 00:20:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:20:15,461 INFO L471 AbstractCegarLoop]: Abstraction has 1940 states and 2845 transitions. [2024-11-20 00:20:15,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:20:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2845 transitions. [2024-11-20 00:20:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-20 00:20:15,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:20:15,464 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-20 00:20:15,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 00:20:15,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:15,669 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:20:15,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:20:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 19780131, now seen corresponding path program 1 times [2024-11-20 00:20:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:20:15,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581637065] [2024-11-20 00:20:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:20:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-11-20 00:20:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-20 00:20:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-11-20 00:20:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-11-20 00:20:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-11-20 00:20:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:20:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581637065] [2024-11-20 00:20:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581637065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166473079] [2024-11-20 00:20:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:20:16,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:20:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:20:16,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:20:16,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 00:20:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:20:16,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-20 00:20:16,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:20:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-20 00:20:17,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:20:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-20 00:20:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166473079] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:20:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:20:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2024-11-20 00:20:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542723468] [2024-11-20 00:20:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:20:17,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:20:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:20:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:20:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:20:17,567 INFO L87 Difference]: Start difference. First operand 1940 states and 2845 transitions. Second operand has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)